I don't know if I'm the first person to mention this, but running on Vista is a bit problematic... there's only an option fo 320x200 when you run winsetup, so it can only be run in a window, which is too small to play it properly. Any chance of making it possible to play in 640x400, which Vista can handle though obviously it will look exactly the same.
Cheers,
Dave
Cheers,
Dave