i have bought a new graphics card (geforce 6600 gt pci express sli) my motherboard is not compatible with pci express so ineed to buy a new motherboard also but i have an AMD XP-2800+    i have serched the web for a motherboard wich is both pci express and AMD XP compatible but alas could only find one but this moboard does not have an onboard graphics chip i dont really no much about  pc's do i require an onboard chip if i have a seperate card..  and if anyone out there has know's were i can get both pci express and AMD XP compatible motherboards could you please let me no ..    cheers