Corbett

Hey guys. I've been running vista for a few weeks now and I have a 7900gt pci-e card in my machine. Under xp I never saw any of this but now under vista I have all kinds of artifacts in CS:S and BF2. In CS:S they go away if i play the game in a window rather than fullscreen. And in BF2 they show up in all of the menus when you first start the game, but not actually in the game itself. Any ideas?