Due to a snafu, the TFS docs were inadvertently removed from the VS2008 SDK. The situation has been remedied. You will find the latest version of the TFS SDK docs here: http://msdn2.microsoft.com/en-us/library/bb130146.aspx. Many of you probably never noticed – all the better 🙂 However I did get quite a few inquiries about it. Thanks for your patience.