Go to
www.windrivers.com use the dirver search page and look for updated drivers for Win2000, (if windrivers dosn't have them knowone will) if the new drivers don't work get the card tested. If the card works consider running a new OS. I have seen some horrible things done by it. The ATI you have is a good card, spend your time being pissed at Windows 2000, it won't be the first time.