<p>I tried that on one with a built in graphics on Mother Board with a socket 774 sempron processor, installed a PCI graphics card to use with the exsisting on board, did not go well, lots of problems windows xp did not seem to like it at all. Although I think the main problem the resolution capabilities of the onboard was different then the capabilities of the pci board.</p><p>The solution I found a dual monitor PCI card online, I had to choose a PCI because this particular MB did not have a PCI express slot. There are several types of dual monitor cards online through tigerdirect.com, and newegg.com, if you are not successful with using two separate video cards.</p>