diff --git a/python/mine/ri_cmd.py b/python/mine/ri_cmd.py
index 3a0ef96..4871481 100644
--- a/python/mine/ri_cmd.py
+++ b/python/mine/ri_cmd.py
@@ -7,9 +7,13 @@ import ri_widget
 import ri_data
 
 import re
+import copy
 
 def quit():
     ''' correspond to quit button '''
+    # maybe a quit in current widget, so call widget.hide()
+    if ri_widget.Widget.current_widget:
+        ri_widget.Widget.current_widget.hide()
     display.quit()
     ri_data.to_xml()
 
@@ -119,7 +123,7 @@ def mp_top_cancel():
 def network_init():
     ''' network initialize '''
     display.var_dict['network_host_name'].    set(value=ri_data.Network.hostname)
-    ri_widget.Widget.dict['network_config_%s' %(ri_data.Network.configuration,)].tk_widget.select()
+    ri_widget.Widget.dict['network_config_%s' %(ri_data.Network.configuration,)].tk_widget.invoke()
     display.var_dict['network_domain_name'].  set(value=ri_data.Network.domain)
     display.var_dict['network_ip'].           set(value=ri_data.Network.ip)
     display.var_dict['network_subnet_mask'].  set(value=ri_data.Network.mask)
@@ -138,5 +142,40 @@ def network_quit():
     ri_data.Network.primary_dns    = display.var_dict['network_primary_dns'].get()
     ri_data.Network.secondary_dns  = display.var_dict['network_secondary_dns'].get()
 
+def ncm_dynamic():
+    ''' when radio button ncm dynamic is checked, several data entry will be set 'disable' '''
+    
+    for n in ('network_domain_name','network_ip','network_subnet_mask','network_gateway','network_primary_dns','network_secondary_dns'):
+        ri_widget.Widget.dict[n].tk_widget.configure(state='disable')
 
+def ncm_static():
+    ''' when radio button ncm static is checked, several data entry will be set 'normal' '''
+    for n in ('network_domain_name','network_ip','network_subnet_mask','network_gateway','network_primary_dns','network_secondary_dns'):
+        ri_widget.Widget.dict[n].tk_widget.configure(state='normal')    
 
+def software_group_construct(w):
+    ''' draw group information on, based on actual data 
+w - Widget instance '''
+    mdt = [ m for m in ri_data.Group.dict.values() if m.install == 'mandatory' ]
+    opt = [ o for o in ri_data.Group.dict.values() if o.install != 'mandatory' ]
+
+    wit = w.widgets.pop()
+    for i in mdt:
+        print i
+        wi = copy.deepcopy(wit)
+        wi.attr['text'] = i.name
+        vn = "software_group_%s" %(i.name)
+        wi.attr['variable'] = vn
+        wi.variables = [(vn, 'StringVar', ''),]
+        wi.grid_location.dict['column'] = mdt.index(i)
+        wi.grid_location.dict['row']    = 0
+        w.add_sub_widget(wi)
+
+def software_group_init():
+    pass
+
+def software_group_quit():
+    pass
+
+def software_group_item():
+    pass
diff --git a/python/mine/ri_tk.py b/python/mine/ri_tk.py
index 96fac75..ea0bcd8 100644
--- a/python/mine/ri_tk.py
+++ b/python/mine/ri_tk.py
@@ -79,11 +79,9 @@ def create_widget_sub(w, p_win):
     for sub_w in w.widgets:
         create_widget_sub(sub_w, w_win)
 
-    # grid management
-    if 'grid_management' in dir(w):
-        for cf in w.grid_management.cf_list:
-            cf_func = getattr(w_win, cf[0])
-            cf_func( cf[1], weight=cf[2])
+    # process action init
+    if 'action' in dir(w) and 'init' in w.action.dict:
+        getattr(sys.modules['ri_cmd'], w.action.dict['init'])()
 
     # handle scroll bar for sub_widgets
     if 'action' in dir(w):
@@ -101,6 +99,12 @@ def create_widget_sub(w, p_win):
             ing_win.configure(command=ing_cmd)
             ed_win[ed_cmd_name]=ing_win.set
             
+    # grid management
+    if 'grid_management' in dir(w):
+        for cf in w.grid_management.cf_list:
+            cf_func = getattr(w_win, cf[0])
+            cf_func( cf[1], weight=cf[2])
+
     # grid location
     if 'grid_location' in dir(w):
         w_win.grid(w.grid_location.dict)
@@ -112,30 +116,10 @@ def create_widget_sub(w, p_win):
     # save tk widget instance into w (widget instance)
     setattr(w, 'tk_widget', w_win)
 
-    # process action init
-    if 'action' in dir(w) and 'init' in w.action.dict:
-        getattr(sys.modules['ri_cmd'], w.action.dict['init'])()
-
     return w_win
 
-# When creating widget, I have to create each sub widget.
-# while destroying a widget, only destroy one. Tk functions will
-# destroy all descendant.
-# so init is a little different from quit.
-def process_action_quit(w):
-    ''' process action quit '''
-    if 'action' in dir(w) and 'quit' in w.action.dict:
-        getattr(sys.modules['ri_cmd'], w.action.dict['quit'])()
-
-    if 'widgets' in dir(w):
-        for sub_w in w.widgets:
-            process_action_quit(sub_w)
-
 def destroy_widget(w):
     ''' w - Widget instance '''
-    # process action quit
-    process_action_quit(w)
-
     w.tk_widget.destroy()
 
 def create_message_box(w):
@@ -181,3 +165,4 @@ w - TopWindow instance '''
 def destroy_top_window(w):
     ''' w - Toplevel instance '''
     w.tk_widget.destroy()
+
diff --git a/python/mine/ri_widget.py b/python/mine/ri_widget.py
index f1e5df7..86fd76b 100644
--- a/python/mine/ri_widget.py
+++ b/python/mine/ri_widget.py
@@ -1,6 +1,8 @@
 #!/usr/bin/python
 
 import ri_tk as display
+import sys
+import ri_cmd
 
 class GridManagement:
     ''' implement grid management '''
@@ -46,6 +48,7 @@ class Widget:
         if 'name' in xml_node.attributes.keys():
             self.name = xml_node.attributes["name"].value
             Widget.dict[self.name] = self
+
         self.tp   = xml_node.attributes["type"].value
         self.attr = {}
         self.widgets=[]
@@ -76,11 +79,32 @@ class Widget:
                     self.bindings.append((seq, \
                                          node.attributes["function"].value))
 
+        if 'construct' in xml_node.attributes.keys():
+            getattr(ri_cmd, xml_node.attributes["construct"].value)(self)
+
+
+    def add_sub_widget(self, w):
+        self.widgets.append(w)
+
     def show(self):
         Widget.current_widget = self
         display.create_widget(self)
+       
+    # When creating widget, I have to create each sub widget.
+    # while destroying a widget, only destroy one. Tk functions will
+    # destroy all descendant.
+    # so init is a little different from quit.
+    def process_action_quit(self):
+        ''' process action quit '''
+        if 'action' in dir(self) and 'quit' in self.action.dict:
+            getattr(sys.modules['ri_cmd'], self.action.dict['quit'])()
+
+        if 'widgets' in dir(self):
+            for sub_w in self.widgets:
+                sub_w.process_action_quit()
 
     def hide(self):
+        self.process_action_quit()
         display.destroy_widget(self)
 
 class MessageBox:
diff --git a/xml/install.xml b/xml/install.xml
index ac6eed7..abe5a6a 100644
--- a/xml/install.xml
+++ b/xml/install.xml
@@ -1,6 +1,6 @@
 <?xml version='1.0' encoding='UTF-8'?>
 <install>
-  <serial-number>123456789012</serial-number>
+  <serial-number>0123</serial-number>
   <partitions unit='sector'>
     <partition device='/dev/hda1' start='63' id='83' size='16450497'/>
     <partition device='/dev/hda2' start='16450560' id='5' size='4016250'/>
@@ -18,12 +18,12 @@
     </raid>
   </raids>
   <mount-points>
-    <mount-point device='/dev/hda1' directory='/' file-system='ext3' format='yes'/>
+    <mount-point device='/dev/hda1' directory='/' file-system='jfs' format='yes'/>
     <mount-point device='/dev/hda5' directory='/usr' file-system='reiserfs' format='no'/>
   </mount-points>
-  <network domain='in.linx' secondary_dns='' ip='192.168.1.25' hostname='localhost' mask='255.255.255.0' primary_dns='192.168.1.254' configuration='static' gateway='192.168.1.254'/>
+  <network domain='google.com' secondary_dns='188.188.166.166' ip='192.168.1.111' hostname='lizhi' mask='255.255.192.0' primary_dns='192.168.1.212' configuration='static' gateway='192.168.1.192'/>
   <groups>
-    <group name='base' install='yes'>
+    <group name='base' install='mandatory'>
       <description>base software packages</description>
       <mandatory>
         <package name='acct'/>
@@ -32,6 +32,7 @@
         <package name='at' install='yes'/>
       </optional>
     </group>
+    <group name='dev' install='mandatory'/>
   </groups>
   <services>
     <service start='yes' package='openssh' script='sshd' name='ssh' number='100'/>
diff --git a/xml/interface_ng.xml b/xml/interface_ng.xml
index 4297724..b6daa23 100644
--- a/xml/interface_ng.xml
+++ b/xml/interface_ng.xml
@@ -29,6 +29,9 @@
       <optional>
 	<attribute name="name"/>
       </optional>
+      <optional>
+	<attribute name='construct'/>
+      </optional>
       <optional>
 	<ref name="widget_attribute"/>
       </optional>
diff --git a/xml/interface_t.xml b/xml/interface_t.xml
index 0f28ded..bfa9920 100644
--- a/xml/interface_t.xml
+++ b/xml/interface_t.xml
@@ -266,6 +266,18 @@ row 4 |                                                            |
     </widget>
   </widget>
 
+<!--
+        column 1             column 2                   column 3
+     ________________________________________________________________________
+    |   ___________                 __________                    ________   |
+    |  |           |     host name |__________|     domain name  |________|  |
+    |  |  Text     |               _                     IP      |________|  |
+    |  |___________|     NCM      |_| dynamic       Subnet mask  |________|  |
+    |                              _                Gateway      |________|  |
+    |                             |_| static        Primary DNS  |________|  |
+    |                                               Secondary DNS|________|  |
+    |________________________________________________________________________|
+-->
   <widget type='Frame' name='network'>
     <grid_management rows='1' columns='3'>
       <configure row='0' weight='1'/>
@@ -274,7 +286,7 @@ row 4 |                                                            |
       <configure column='2' weight='1'/>
     </grid_management>
     <grid_location row='2' column='0' columnspan='3' sticky='NSWE'/>
-    <action init='network_init'/>
+    <action init='network_init' quit='network_quit'/>
 
     <widget type='Text'>
       <widget_attribute width='40' height='15' state='disabled'/>
@@ -306,12 +318,12 @@ row 4 |                                                            |
       </widget>
 
       <widget type='Radiobutton' name='network_config_dynamic'>
-	<widget_attribute text='dynamic' variable='network_config_method' value='dynamic'/>
+	<widget_attribute text='dynamic' variable='network_config_method' value='dynamic' command='ncm_dynamic'/>
 	<grid_location row='1' column='1' sticky='W'/>
       </widget>
 
       <widget type='Radiobutton' name='network_config_static'>
-	<widget_attribute text='static' variable='network_config_method' value='static' />
+	<widget_attribute text='static' variable='network_config_method' value='static' command='ncm_static'/>
 	<grid_location row='2' column='1' sticky='W'/>
       </widget>
     </widget>
@@ -323,7 +335,7 @@ row 4 |                                                            |
 	<widget_attribute text='Domain name'/>
 	<grid_location row='0' column='0'/>
       </widget>
-      <widget type='Entry'>
+      <widget type='Entry' name='network_domain_name'>
 	<widget_attribute width='16' textvariable='network_domain_name'/>
 	<grid_location row='0' column='1' pady='2'/>
 	<variable name='network_domain_name' type='StringVar'/>
@@ -333,7 +345,7 @@ row 4 |                                                            |
 	<widget_attribute text='IP'/>
 	<grid_location row='1' column='0'/>
       </widget>
-      <widget type='Entry'>
+      <widget type='Entry' name='network_ip'>
 	<widget_attribute width='16' textvariable='network_ip'/>
 	<grid_location row='1' column='1' pady='2'/>
 	<variable name='network_ip' type='StringVar'/>
@@ -343,7 +355,7 @@ row 4 |                                                            |
 	<widget_attribute text='Subnet mask'/>
 	<grid_location row='2' column='0'/>
       </widget>
-      <widget type='Entry'>
+      <widget type='Entry' name='network_subnet_mask'>
 	<widget_attribute width='16' textvariable='network_subnet_mask'/>
 	<grid_location row='2' column='1' pady='2'/>
 	<variable name='network_subnet_mask' type='StringVar'/>
@@ -353,7 +365,7 @@ row 4 |                                                            |
 	<widget_attribute text='Gateway'/>
 	<grid_location row='3' column='0'/>
       </widget>
-      <widget type='Entry'>
+      <widget type='Entry' name='network_gateway'>
 	<widget_attribute width='16' textvariable='network_gateway'/>
 	<grid_location row='3' column='1' pady='2'/>
 	<variable name='network_gateway' type='StringVar'/>
@@ -363,7 +375,7 @@ row 4 |                                                            |
 	<widget_attribute text='Primary DNS'/>
 	<grid_location row='4' column='0'/>
       </widget>
-      <widget type='Entry'>
+      <widget type='Entry' name='network_primary_dns'>
 	<widget_attribute width='16' textvariable='network_primary_dns'/>
 	<grid_location row='4' column='1' pady='2'/>
 	<variable name='network_primary_dns' type='StringVar'/>
@@ -373,7 +385,7 @@ row 4 |                                                            |
 	<widget_attribute text='Secondary DNS'/>
 	<grid_location row='5' column='0'/>
       </widget>
-      <widget type='Entry'>
+      <widget type='Entry' name='network_secondary_dns'>
 	<widget_attribute width='16' textvariable='network_secondary_dns'/>
 	<grid_location row='5' column='1' pady='2'/>
 	<variable name='network_secondary_dns' type='StringVar'/>
@@ -381,6 +393,34 @@ row 4 |                                                            |
     </widget>
   </widget>
 
+<!--
+
+-->
+
+  <widget type='Frame' name='software-group'>
+    <grid_management rows='1' column='2'>
+      <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'/>
+
+    <widget type='Text'>
+      <widget_attribute width='40' height='15' state='disabled'/>
+      <grid_location row='0' column='0'/>
+    </widget>
+
+    <widget type='Frame' name='software_group_content' construct='software_group_construct'>
+      <grid_location row='0' column='1' sticky='NSWE' />
+      <action init='software_group_init' quit='software_group_quit'/>
+      <!-- a template for software group item -->
+      <widget type='Checkbutton' name='software-group-item'>
+	<widget_attribute text='' command='software_group_item' variable='' onvalue='on' offvalue='off'/>
+	<grid_location row='0' column='0'/>
+      </widget>
+    </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'/>
 
@@ -482,5 +522,6 @@ row 4 |                                                            |
     <widget name='serial_no'/>
     <widget name='mount'/>
     <widget name='network'/>
+    <widget name='software-group'/>
   </sequence>
 </interface>