ATI release new drivers very fequently - so much so that you'll need to update them every couple of months. Just go to ATI.com, and select "built by ATI: download drivers" or "powered by ATI: download drivers" in the bottom left hand corner (depending on whether your card is an ATI product, or simply part of your PC and happens to be ATI). Now select the product and the OS, and follow their instructions. This is the way to update the drivers, NOT to reinstall the existing ones! And yes, you can install them over the top of your existing ones - you do NOT need to uninstall first.