Bigdog I'd like to offer to help you.
The first thing I'd try is to install new video card drivers for your video card. If you are using the standard onces that come with Windows XP (assuming you are using XP here) or most other MS operating systems are shite.
If you have an NVIDIA card, download the latest drivers for your card from www.nvidia.com
If you have an ATI card, download the latest drivers for your card from www.ati.com
Download the new/updated driver, install it and reboot. See if that works.
If you have another type of card let me know what type it is and I'll help further.