My friend has this prob. His motherboard is asus p4v8x-mx and has onboard graphic ''card''. He want to disable and put a geforce 6200. The problem is that either he delete the onboard from xp and install geforce drivers,either he disable it in the bios,the computer doesnot recognize his geforce.. He has managed to install it for 3-4 days but sometimes xp loads the onboard drivers and he cant use his card.