DX10 is not reverse compatiable. DX10 will only run on a DX10 "engineered" card. It won't be a simply patch or driver or any other fix. Its physical hardware demand. the G71 and G80 will not be DX10 cards. Well, the G80 might be, actually, if it comes out late enough. (After July 06 when Vista arrives w/DX10) Again though, DX10 is EXCLUSIVE to new DX10 "hardware". This has been argued again and again on this forum. It's the sad truth...DX10 is one **** of a beast and needs support for higher shaders, etc. I know its simply software but its like super software.