See Also: http://msdn2.microsoft.com/en-us/library/bb687712.aspx The Visual Studio 2005 extensions for Windows SharePoint Services 3.0 provide new support for creating SharePoint applications. The tools significantly simplify the process of creating SharePoint site definitions, with Microsoft Visual Studio 2005 automating the creation of the necessary content, configuration, and deployment files. This Office Visual How To illustrates how to build a Windows SharePoint Services 3.0 site definition and add a custom master page to the definition by using Visual Studio 2005 and Visual Studio 2005 extensions for Windows SharePoint Services 3.0.