Bene, questo è molto importante per non affrontare 
contemporaneamente la migrazione a VS2005 e a TFS  .
.
Inoltre supporta pienamente changeset, l'associazione con i workitem e le 
check-in notes.
Mancano "solo" le policy, e siamo a posto 
We just released Visual Studio Team Foundation Server MSSCCI Provider Beta 2, which now includes support for using Team Foundation with both Visual Studio 6.0 and Visual Studio .NET 2003. This release works with Team Foundation Server RC, and should also work with the final released bits, too.
The Visual Studio Team Foundation Server MSSCCI 
    Provider enables users of Visual Studio 6.0 and Visual Studio .NET 2003 to 
    use Visual Studio 2005 Team Foundation Server Version Control with 
    integrated source control features. This release includes support for work 
    item integration to associate work items with changesets, and check-in 
    notes.
Fonte: Using Team Foundation with Visual Studio 6.0 and Visual Studio .NET 2003