diff --git a/xml/interface_t.xml b/xml/interface_t.xml
index 5ddc20b..c0b0337 100644
--- a/xml/interface_t.xml
+++ b/xml/interface_t.xml
@@ -6,7 +6,10 @@
        ____________________________________________________________
 row 0 | logo		    step_name			version    |
 row 1 |____________________________________________________________|
-row 2 |                                                            |
+row 2 | __________                                                 |
+      ||          |                                                |
+      || text     |                                                |
+      ||__________|                                                |
 row 3 | 		 copyright information	    		   |
 row 4 | quit	    	      			 previous  next    |
       |____________________________________________________________|
@@ -21,6 +24,7 @@ row 4 | quit	    	      			 previous  next    |
     <grid_location row='0' column='0' sticky='NSWE'/>
 
     <variable name='main.step_name' type='StringVar' />
+
     <widget type='Label'>
       <widget_attribute image='linxlogo.gif'/>
       <grid_location row='0' column='0' sticky='W' padx='5' pady='5'/>
@@ -33,13 +37,19 @@ row 4 | quit	    	      			 previous  next    |
       <widget_attribute text='#os-name'/>
       <grid_location row='0' column='2' sticky='E'/>
     </widget>
+
     <widget type='Frame'>
       <widget_attribute height='3' background='black'/>
       <grid_location row='1' column='0' columnspan='3' sticky='WE'/>
     </widget>
 
+    <widget type='Text'>
+      <widget_attribute state='disabled'/>
+      <grid_location row='2' column='0' padx='10' pady='10' sticky='NSWE'/>
+    </widget>
+
     <widget type='Label'>
-      <widget_attribute text='Copyright'/>
+      <widget_attribute text='#Copyright'/>
       <grid_location row='3' column='0' columnspan='3' pady='20'/>
     </widget>
 
@@ -63,14 +73,14 @@ row 4 | quit	    	      			 previous  next    |
        ____________________________________________________________
 row 0 |                                                            |
 row 1 |                                                            |
-row 2 | Welcome     to        Rocky           OS                   |
+row 2 |                     Welcome                                |
 row 3 |                                                            |
 row 4 |                                                            |
       |____________________________________________________________|
 -->
   <widget type='Label' name='welcome'>
-    <widget_attribute text='Welcome'/>
-    <grid_location row='2' column='0' columnspan='3'/>
+    <widget_attribute text='#Welcome'/>
+    <grid_location row='2' column='1' columnspan='2'/>
   </widget>
 
 <!--
@@ -78,11 +88,11 @@ row 4 |                                                            |
        ____________________________________________________________
 row 0 |                                                            |
 row 1 |                                                            |
-row 2 |  _________           _________________                     |
-      | | text    |         | serial number   |                    |
-      | |         |         | ______________  |                    |
-      | |         |         ||              | |                    |
-      | |_________|         ||______________| |                    |
+row 2 |                      _________________                     |
+      |                     | serial number   |                    |
+      |                     | ______________  |                    |
+      |                     ||              | |                    |
+      |                     ||______________| |                    |
       |                     |_________________|                    |
 row 3 |                                                            |
 row 4 |                                                            |
@@ -90,29 +100,22 @@ row 4 |                                                            |
 -->
 
   <widget type='Frame' name='serial_no'>
-    <grid_management rows='1' columns='3'>
+    <grid_management rows='1' columns='1'>
       <configure row='0' weight='1'/>
       <configure column='0' weight='1'/>
-      <configure column='1' weight='1'/>
-      <configure column='2' weight='1'/>
     </grid_management>
-    <grid_location row='2' column='0' columnspan='3' sticky='NSWE'/>
-    <variable name='serial_no.number' type='StringVar' value='123456789012'/>
-
-    <widget type='Text'>
-      <widget_attribute width='40' height='15' state='disabled'/>
-      <grid_location row='0' column='0'/>
-    </widget>
+    <grid_location row='2' column='1' columnspan='2' sticky='NSWE'/>
 
     <widget type='Frame'>
-      <grid_location row='0' column='1'/>
+      <grid_location row='0' column='0'/>
       <widget type='Label'>
 	<widget_attribute text='serial number'/>
 	<grid_location row='0' column='0' sticky='W'/>
       </widget>
       <widget type='Entry'>
 	<widget_attribute width='12' textvariable='serial_no.number'/>
-	<grid_location row='1' column='0'/>
+	<grid_location row='1' column='0' sticky='W'/>
+	<variable name='serial_no.number' type='StringVar' value='123456789012'/>
 	<action init='serial_no_init' quit='serial_no_quit'/>
       </widget>
     </widget>
@@ -124,37 +127,39 @@ row 4 |                                                            |
 row 0 |                                                            |
 row 1 |                                                            |
 row 2 |                                                            |
-      |  _________                   _________                     |
-      | |         |         device: |_________|                    |
-      | |         |          __________________________            |
-      | | text    |         |                          |           |
-      | |         |         |                          |           |
-      | |         |         |                          |           |
-      | |_________|         |                          |           |
-      |                     |__________________________|           |
-      |                                                            |
-      |                      new edit delete       reset           |
-      |                                                            |
+      |                     ___________________________            |
+      |                    |         _________         |           |
+      |                    |device: |_________|        |           |
+      |                    |___________________________|           |
+      |                     _______________________________        |
+      |                    | __________________________    |       |
+      |                    ||                          | ^ |       |
+      |                    ||                          | | |       |
+      |                    ||                          | | |       |
+      |                    ||                          | | |       |
+      |                    ||__________________________| v |       |
+      |                    |                               |       |
+      |                    | new edit delete       reset   |       |
+      |                    |_______________________________|       |
 row 3 |                                                            |
 row 4 |                                                            |
       |____________________________________________________________|
 -->
+
+<!--
+  partition is currently unused
+-->
+
   <widget type='Frame' name='partition'>
-    <grid_management rows='3' columns='2'>
+    <grid_management rows='2' columns='1'>
       <configure row='0' weight='1'/>
       <configure row='1' weight='1'/>
       <configure column='0' weight='1'/>
-      <configure column='1' weight='1'/>
     </grid_management>
-    <grid_location row='2' column='0' columnspan='3' sticky='NSWE'/>
-
-    <widget type='Text'>
-      <widget_attribute width='40' height='15' state='disabled'/>
-      <grid_location row='0' column='0' rowspan='4'/>
-    </widget>
+    <grid_location row='2' column='1' columnspan='2' sticky='NSWE'/>
 
     <widget type='Frame'>
-      <grid_location row='0' column='1' sticky='WS' pady='10'/>
+      <grid_location row='0' column='0' sticky='WS' pady='10'/>
       <widget type='Label'>
 	<widget_attribute text='device:'/>
 	<grid_location row='0' column='0' />
@@ -169,7 +174,7 @@ row 4 |                                                            |
       <grid_management rows='2' columns='5'>
 	<configure column='3' weight='1'/>
       </grid_management>
-      <grid_location row='1' column='1' sticky='NW'/>
+      <grid_location row='1' column='0' sticky='NW'/>
       <action>
 	<scroll scrolling='partition.scroll' scrolled='partition.list'/>
       </action>
@@ -211,95 +216,84 @@ row 4 |                                                            |
 row 0 |                                                            |
 row 1 |                                                            |
 row 2 |                                                            |
-      |  _________           __________________________            |
-      | |         |         |                          |           |
-      | |         |         |                          |           |
-      | | text    |         |                          |           |
-      | |         |         |                          |           |
-      | |         |         |                          |           |
-      | |_________|         |                          |           |
+      |                      __________________________            |
+      |                     | __________________       |           |
+      |                     ||                  | ^    |           |
+      |                     ||                  | |    |           |
+      |                     ||                  | |    |           |
+      |                     ||                  | |    |           |
+      |                     ||__________________| v    |           |
+      |                     |< - - - - - - - - ->      |           |
       |                     |__________________________|           |
       |                                                            |
       |                                                            |
-      |                                                            |
 row 3 |                                                            |
 row 4 |                                                            |
       |____________________________________________________________|
 -->
 
   <widget type='Frame' name='mount'>
-    <grid_management rows='1' columns='2'>
+    <grid_management rows='1' columns='1'>
       <configure row='0' weight='1'/>
       <configure column='0' weight='1'/>
-      <configure column='1' weight='1'/>
     </grid_management>
-    <grid_location row='2' column='0' columnspan='3' sticky='NSWE'/>
-
-    <action>
-      <scroll scrolling='mount.scroll' scrolled='mount.list'/>
-    </action>
-
-    <widget type='Text'>
-      <widget_attribute width='40' height='15' state='disabled'/>
-      <grid_location row='0' column='0'/>
-    </widget>
+    <grid_location row='2' column='1' columnspan='2' sticky='NSWE'/>
 
     <widget type='Frame'>
-      <grid_management rows='1' columns='2'>
+      <grid_management rows='2' columns='2'>
 	<configure row='0' weight='1'/>
 	<configure column='0' weight='1'/>
       </grid_management>
-      <grid_location row='0' column='1' columnspan='2'/>
+      <grid_location row='0' column='0' columnspan='2' padx='20' pady='20' sticky='NSWE'/>
+
+      <action>
+	<scroll scrolling='mount.scroll.v' scrolled='mount.list'/>
+	<scroll scrolling='mount.scroll.h' scrolled='mount.list'/>
+      </action>
 
       <widget type='Listbox' name='mount.list'>
-	<widget_attribute width='40' height='15' listvariable='mount.list'/>
-	<grid_location row='0' column='0'/>
+	<widget_attribute listvariable='mount.list'/>
+	<grid_location row='0' column='0' sticky='NSWE'/>
 	<variable name='mount.list' type='StringVar'/>
 	<action init='mount_list_init'/>
 	<binding sequence='ListboxSelect' function='mount_list_modify' wrap='double'/>
       </widget>
-
-      <widget type='Scrollbar' name='mount.scroll'>
+      <widget type='Scrollbar' name='mount.scroll.v'>
 	<widget_attribute orient='vertical'/>
 	<grid_location row='0' column='1' sticky='NS'/>
       </widget>
+
+      <widget type='Scrollbar' name='mount.scroll.h'>
+	<widget_attribute orient='horizontal'/>
+	<grid_location row='1' column='0' sticky='WE'/>
+      </widget>
     </widget>
   </widget>
 
 <!--
         column 1             column 2                   column 3
      ________________________________________________________________________
-    |   ___________                 __________                    ________   |
-    |  |           |     host name |__________|     domain name  |________|  |
-    |  |  Text     |               _                     IP      |________|  |
-    |  |___________|     NCM      |_| dynamic       Subnet mask  |________|  |
+    |                               __________                    ________   |
+    |                    host name |__________|     domain name  |________|  |
+    |                              _                     IP      |________|  |
+    |                    NCM      |_| dynamic       Subnet mask  |________|  |
     |                              _                Gateway      |________|  |
     |                             |_| static        Primary DNS  |________|  |
     |                                               Secondary DNS|________|  |
     |________________________________________________________________________|
 -->
   <widget type='Frame' name='network'>
-    <grid_management rows='1' columns='3'>
+    <grid_management rows='1' columns='2'>
       <configure row='0' weight='1'/>
       <configure column='0' weight='1'/>
       <configure column='1' weight='1'/>
-      <configure column='2' weight='1'/>
     </grid_management>
-    <grid_location row='2' column='0' columnspan='3' sticky='NSWE'/>
+    <grid_location row='2' column='1' columnspan='2' sticky='NSWE'/>
+
     <action init='network_init' quit='network_quit'/>
 
-    <widget type='Text'>
-      <widget_attribute width='40' height='15' state='disabled'/>
-      <grid_location row='0' column='0'/>
-    </widget>
-
     <widget type='Frame'>
-      <grid_management rows='3' columns='2'>
-	<configure row='0' weight='1'/>
-	<configure row='1' weight='1'/>
-	<configure row='2' weight='1'/>
-      </grid_management>
-      <grid_location row='0' column='1' sticky='W'/>
+      <grid_location row='0' column='0'/>
       <variable name='network_config_method' type='StringVar'/>
 
       <widget type='Label'>
@@ -329,7 +323,7 @@ row 4 |                                                            |
     </widget>
 
     <widget type='Frame'>
-      <grid_location row='0' column='2'/>
+      <grid_location row='0' column='1'/>
 
       <widget type='Label'>
 	<widget_attribute text='Domain name'/>
@@ -394,64 +388,65 @@ row 4 |                                                            |
   </widget>
 
 <!--
-
+        column 1             column 2                   column 3
+     ________________________________________________________________________
+    |                        Mandatory                                       |
+    |                    ___________________________________________         |
+    |                   | ___________________   __________________  |        |
+    |                   || mandatory group 1 | | mandatory group2 | |        |
+    |                   ||___________________| |__________________| |        |
+    |                   |___________________________________________|        |
+    |                                                                        |
+    |                        Optional                                        |
+    |                    _____________________________________________       |
+    |                   |  _              _              _            |      |
+    |                   | |_| optional 1 |_| optional 2 |_| optional 3|      |
+    |                   |_____________________________________________|      |                                             
+    |________________________________________________________________________|
 -->
 
   <widget type='Frame' name='software-group'>
-    <grid_management rows='1' columns='2'>
-      <configure row='0' weight='1'/>
+    <grid_management rows='4' columns='1'>
+      <configure row='1' weight='1'/>
+      <configure row='3' weight='1'/>
       <configure column='0' weight='1'/>
-      <configure column='1' weight='1'/>
     </grid_management>
-    <grid_location row='2' column='0' columnspan='3' sticky='NSWE'/>
+    <grid_location row='2' column='1' columnspan='2' sticky='NSWE'/>
 
-    <widget type='Text'>
-      <widget_attribute width='40' height='15' state='disabled'/>
-      <grid_location row='0' column='0'/>
+    <widget type='Label'>
+      <widget_attribute text='Mandatory'/>
+      <grid_location row='0' column='0' />
+    </widget>
+    <widget type='Frame' construct='software_group_mandatory_construct'>
+      <grid_management rows='x' columns='3'>
+	<configure column='0' weight='1'/>
+	<configure column='1' weight='1'/>
+	<configure column='2' weight='1'/>
+      </grid_management>
+      <grid_location row='1' column='0'/>
+      <!-- a template for software group mandatory item -->
+      <widget type='Button' >
+	<widget_attribute text='' command='software_group_mandatory_item'/>
+	<grid_location row='0' column='0' sticky='W'/>
+      </widget>
     </widget>
 
-    <widget type='Frame' name='software_group_content'>
-      <grid_management rows='4' columns='1'>
-	<configure row='1' weight='1'/>
-	<configure row='3' weight='1'/>
+    <widget type='Label'>
+      <widget_attribute text='Optional'/>
+      <grid_location row='2' column='0'/>
+    </widget>
+    <widget type='Frame' construct='software_group_optional_construct'>
+      <grid_management rows='x' columns='3'>
+	<configure column='0' weight='1'/>
+	<configure column='1' weight='1'/>
+	<configure column='2' weight='1'/>
       </grid_management>
-      <grid_location row='0' column='1' sticky='NSWE' />
-      <widget type='Label'>
-	<widget_attribute text='Mandatory'/>
-	<grid_location row='0' column='0'/>
-      </widget>
-      <widget type='Frame' construct='software_group_mandatory_construct'>
-	<grid_management rows='x' columns='3'>
-	  <configure column='0' weight='1'/>
-	  <configure column='1' weight='1'/>
-	  <configure column='2' weight='1'/>
-	</grid_management>
-	<grid_location row='1' column='0'/>
-	<!-- a template for software group mandatory item -->
-	<widget type='Button' name='software-group-mandatory-item' >
-	  <widget_attribute text='' command='software_group_mandatory_item'/>
-	  <grid_location row='0' column='0' sticky='W'/>
-	</widget>
-      </widget>
-
-      <widget type='Label'>
-	<widget_attribute text='Optional'/>
-	<grid_location row='2' column='0'/>
-      </widget>
-      <widget type='Frame' construct='software_group_optional_construct'>
-	<grid_management rows='x' columns='3'>
-	  <configure column='0' weight='1'/>
-	  <configure column='1' weight='1'/>
-	  <configure column='2' weight='1'/>
-	</grid_management>
-	<grid_location row='3' column='0'/>
-	<action quit='software_group_optional_quit'/>
-	<!-- a template for software group optional item -->
-	<widget type='Checkbutton' name='software-group-optional-item'>
-	  <widget_attribute text='' variable='' command='' onvalue='yes' offvalue='no'/>
-	  <grid_location row='0' column='0' sticky='W'/>
-	</widget>
-
+      <grid_location row='3' column='0'/>
+      <action quit='software_group_optional_quit'/>
+      <!-- a template for software group optional item -->
+      <widget type='Checkbutton'>
+	<widget_attribute text='' variable='' command='' onvalue='yes' offvalue='no'/>
+	<grid_location row='0' column='0' sticky='W'/>
       </widget>
     </widget>
   </widget>
@@ -520,8 +515,8 @@ row 4 |                                                            |
     </widget>
   </widget>
 
-  <message_box name='previous' type='info' title='#install-sequence' message='#first-step'/>
-  <message_box name='next' type='info' title='#install-sequence' message='#last-step'/>
+  <message_box name='previous' type='info' title='install sequence' message='#first-step'/>
+  <message_box name='next' type='info' title='install sequence' message='#last-step'/>
 
 <!--
                 column 0              column 1
@@ -612,65 +607,51 @@ row 4 |                                                            |
     </widget>
   </top_window>
 
-<!--
-  <top_window name='software_package_template' construct='software_package_construct'>
--->
-<!--
-  <top_window name='software_package_template'>
-    <grid_management rows='4' columns='2'>
-      <configure row='1' weight='1'/>
-      <configure row='3' weight='1'/>
-      <configure column='0' weight='1'/>
-    </grid_management>
-    
-    <widget type='Label'>
-      <widget_attribute text='Mandatory'/>
-      <grid_location row='0' column='0'/>
-    </widget>
-    <widget type='Canvas'>
-      <grid_location row='1' column='0' sticky='NWSE'/>
-    </widget>
-    <widget type='Scrollbar'>
-      <widget_attribute orient='vertical'/>
-      <grid_location row='1' column='1' sticky='NSW'/>
-    </widget>
+  <message key='#Copyright'>
+    <English>Copyright 2001-2010 Linx Technology Co., Ltd.</English>
+    <Chinese>北京凝思科技有限公司 版权所有</Chinese>
+  </message>
+
+  <message key='#first-step'>
+    <English>You have already been in the first step.</English>
+    <Chinese>您已到达第一步。</Chinese>
+  </message>
+
+  <message key='#last-step'>
+    <English>You have already been in the last step.</English>
+    <Chinese>您已到达最后一步。</Chinese>
+  </message>
+
+  <message key='#NCM'>
+    <English>Network Configuration Management:</English>
+    <Chinese>网络配置方式</Chinese>
+  </message>
 
-    <widget type='Label'>
-      <widget_attribute text='Optional'/>
-      <grid_location row='2' column='0'/>
-    </widget>
-    <widget type='Checkbutton'>
-      <widget_attribute text='Select all' variable='select_all'/>
-      <grid_location row='2' column='1'/>
-      <variable name='select_all' type='StringVar'/>
-    </widget>
-    <widget type='Canvas'>
-      <grid_location row='3' column='0' sticky='NWES'/>
-    </widget>
-    <widget type='Scrollbar'>
-      <widget_attribute orient='vertical'/>
-      <grid_location row='3' column='1' sticky='NSW'/>
-    </widget>
-  </top_window>
--->  
   <message key='#os-name'>
     <English>Rocky 4.2</English>
     <Chinese>磐石 4.2</Chinese>
   </message>
 
+  <message key='#Welcome'>
+    <English>Welcome to use
+Linx Rocky Secure Operating System v4.2</English>
+    <Chinese>欢迎使用
+凝思磐石安全操作系统 v4.2</Chinese>
+  </message>
+
   <message>
     <English>Copyright</English>
     <Chinese>版权</Chinese>
   </message>
 
-  <message key='host name'>
+  <message>
     <English>host name</English>
     <Chinese>主机名</Chinese>
   </message>
 
-  <message key='#NCM'>
-    <English>Network Configuration Management:</English>
-    <Chinese>网络配置方式</Chinese>
+  <message>
+    <English>install sequence</English>
+    <Chinese>安装顺序</Chinese>
   </message>
 
   <sequence name='main'>