Add a reference to your project by clicking on Projects >
References... > and then check "Microsoft SourceSafe 6.0 Type Library"

You can auto-login with - VSSDatabase.Open([SrcSafeIni As String], [Username As String], [Password As String])

Then add the files to SourceSafe - VSSItem.Add(Local As String, [Comment As String], [iFlags As Long])

As long as the project is already created and the files do not exist
you shouldnt have to do any more, depending upon what you are
trying to accomplish. Either way this should get you going.