I have Vista Ultimate 32bit with 4GB ram (of course only 3 in use) Core 2 Duo with an 8800GTS 640MB. It will run windowed at 800x600 but not full screen at 1680x1050 and I don't get the icons in the display. It does run very smoothly tho with Aero turned on. The Russian sites suggest that it runs fine on vista...