For me I thought getting QFGV to work on XP was hopeless. Having it set to run in "Compatibility mode" for Win 2000 made it work. It would actually run fine, just the sound was all choppy. Win 2000 mode fixed that.
Most of the time changing the compatibility to other versions of Windows doesn't do much. At first I had QFGV set to Win 95 mode and that just made it crash.