<Feature Id="B2CB42E2-4F0A-4380-AABA-1EF9CD526F20"Title="Hello World Feature"Description="这是我的第一个Feature"Scope="Web"Hidden="FALSE"ImageUrl="TPG\canteen.gif"ReceiverAssembly="HelloWorld, Version=1.0.0.0, Culture=neutral, PublicKeyToken=b38a04419cc857d9"ReceiverClass="HelloWorld.FeatureReceiver"xmlns="http://schemas.microsoft.com/sharepoint/">

<ElementManifests>
<ElementManifest Location="elements.xml"/>
</ElementManifests>

</Feature>

<Elements xmlns="http://schemas.microsoft.com/sharepoint/">

<CustomAction Id="SiteActionsToolbar"GroupId="SiteActions"Location="Microsoft.SharePoint.StandardMenu"Sequence="100"Title="Hello World"Description="使用feature方式自定义菜单"ImageUrl="_layouts/images/crtsite.gif">
<UrlAction Url="http://msdn.microsoft.com"/>
</CustomAction>

</Elements>

using System; 
using Microsoft.SharePoint;

namespace HelloWorld 
{ 
  public class FeatureReceiver : SPFeatureReceiver 
   { 
       public override void FeatureInstalled(SPFeatureReceiverProperties properties) { } 
       public override void FeatureUninstalling(SPFeatureReceiverProperties properties) { } 
       public override void FeatureActivated(SPFeatureReceiverProperties properties) 
      { 
           SPWeb site = (SPWeb)properties.Feature.Parent; 
           site.Properties["OriginalTitle"] = site.Title; 
           site.Properties.Update(); 
           site.Title = "Hello World Modify"; 
           site.Update(); 
      }

public override void FeatureDeactivating(SPFeatureReceiverProperties properties) 
   { 
       SPWeb site = (SPWeb)properties.Feature.Parent; 
       site.Title = site.Properties["OriginalTitle"]; 
       site.Update(); 
    } 
  } 
}

@SET TEMPLATEDIR="c:\program files\common files\microsoft shared\web server extensions\12\Template" 
@SET STSADM="c:\program files\common files\microsoft shared\web server extensions\12\bin\stsadm" 
@SET GACUTIL="d:\Program Files\Microsoft Visual Studio 8\SDK\v2.0\Bin\gacutil.exe"

Echo Installing HelloWorld.dll in GAC 
%GACUTIL% -if bin\debug\HelloWorld.dll

Echo Copying files to TEMPLATE directory 
xcopy /e /y TEMPLATE\* %TEMPLATEDIR%

Echo Installing feature 
%STSADM% -o installfeature -filename  HelloWorld\feature.xml -force

IISRESET 
REM cscript c:\windows\system32\iisapp.vbs /a "SharePointDefaultAppPool" /r

http://www.cnblogs.com/carysun/archive/2008/04/16/feature.html