Hello leo_vinso- I apologize up front because I don't understand what you're trying to do and I don't know what "on whist" means. It sounds like you're trying to use explorer from Win 7 in Vista. Not sure why you would want to that.
I would have suggested posting at MSFN, but of course you already did. I doubt that anyone has ever done that before, so have fun! It would obviously be much simpler to give up Vista and run Windows 7 if you want its features.