Using a Dell 500mhz system with 512 meg ram. Using it to run a ATI 8500 video card to play dvd's on a sony 1271 crt projector. I'm using windows 98, but also have copies of windows 2000 and windows xp professional. Not having any problems with windows 98 but wondering if it would be better to run windows 2000 or windows xp professional. Any input appreciated.