ATI AIW 9800 Pro

I have a Built-by-ATI All-In-Wonder 9800 Pro. I am runnind Windows XP Pro SP2 and things have been great with the card for awhile. I recently developed a curiosity for Linux and downloaded the ISO's for Slackware 10. After installing SW and configuring the LILO boot loader to boot into WinXP by default and Linux as an option, I can't stay in WinXP for more than a view minutes without my screen flickering and getting a message from VPU Recover saying that my card stopped responding and was reset. After this happens 2-3 times, the computer either locks up or reboots. I am assuming this has something to do with Linux, but I have since removed it and restored the MBR and reinstalled the ATI drivers and my AGPGART. Any ideas? THanks!

 

Forgot my system specs:
P4 2.0GHz, Northwood core
512MB DDR333 RAM (2x256MB)
Soyo P4S Dragon Ultra mobo w/SiS645 chipset
ATI All-In-Wonder Radeon 9800 Pro w/128MB RAM