AGP Redraw Problem

If this topic is covered elsewhere, I apologize and would appreciate
being directed to the proper topic.

I am using the Soyo KT400 Dragon Ulta motherboard and was doing well
until I installed a Chaintech Volari V3 AGP graphics card. Now I have
redraw problems. This video card is 4X 8X compatible and I have
downloaded and installed the latest driver from Chaintech.

My motherboard came with the 2AA8 BIOS, and I'm concerned that this
isn't the proper BIOS for my CPU (AMD Barton Athlon XP 2500+). Do I
want the 2AA7 or 2AA9 BIOS or am I looking for a solution in the wrong
place?

Any suggestions on settings I might change or any other ideas that
might solve my redraw problem would be appreciated.