Ah, there it is. Still no joy, though. When I try to join the TFS project it keeps wanting the local project to be one level below its actual location. i.e. server path is $/xxxx/yyyy (correct) and it wants the PJX to be in c:\xxxx\yyyy\yyyy (incorrect).
I am going to put this aside again, at least for now. It may well be a Mike problem rather than a TFS or VFP problem.