im in a bit of the same predicament at the moment. Been off woork ill last couple of weeks but just after VS2008 Team was released i was looking into how it would effect our current VS2005 TFS servers. The only informaiton i could find was that VS2008 and TFS2005 were not compatible. If you tried to do a build on something which is new in 2008 e.g. wpf applications on TFS2005 it would not work. Can anyone shed some light as to what is and isnt compatible with TFS2005 and VS2008 ?