Un paio di interessanti post sul supporto di SourceSafe su Vista
Clarifying SourceSafe support on Vista - http://blogs.msdn.com/richardb/archive/2007/01/23/clarifying-sourcesafe-support-on-vista.aspx e http://blogs.msdn.com/richardb/archive/2007/01/26/sourcesafe-on-vista-part-2.aspx