http://blogs.msdn.com/mcampos/archive/2009/07/08/search-federation-in-windows-7.aspxSome Windows 7 demos present how you can integrate other sources to be search providers in Windows 7. This is called search federation. Here are some links: Technical docs: http://msdn.microsoft.com/en-us/library/dd742958(VS.85).aspx Implementer's Guide:en-USCommunityServer 2.1 SP1 (Build: 61025.2)