Ummm... Vonderman, any machine that is a laptop or has a mobile-something 3D-card is a sure way to get in trouble, even with old/robust Blitz3D tech. I wouldn't mind too much if these are the only machines that cause you problems. I can try this on my laptop that has Intel's integrated 852GM with 64mb (shared memory) but I'm sure that it would be more or less waste of time :)