Hi Ronald,
If by 6.0 repository you mean the older version of Visual Source Safe
database, then yes, Visual Source Safe 2005 is more or less identical to
the previous version and should handle your old repository just fine.
Installing Visual Source Safe 2005 on a System with Visual Source Safe 6.0
will cause the files shortcuts to be put inside the same Visual Source
Safe folder on your startup menu and you can use either version of both
admin tool and client against Source Safe databases created with 6.0 or
2005.
--
Happy Coding!
Morten Wennevik [C# MVP]