http://blogs.msdn.com/quanto/archive/2009/07/02/extension-manager-intro-video.aspxI just put together a quick intro to the extension manager. Consider it my 1 minute elevator pitch of what the extension manager is and what you can do with it. Check it out on Channel 9 at: http://channel9.msdn.com/posts/cgranger/The-VS2010-Extension-Manageren-USCommunityServer 2.1 SP1 (Build: 61025.2)