I've got 8.10 running on a fresh xp-32 sp3 install now w/ Barr3l Rid3r's BIOS. At first I tried modding the 3D clocks slightly to 800/1150, but that didn't seem to want to work right. I tried all kinds of things like using the stock BIOS to install 8.10, and then switching it, but nothing worked. I even went through the trouble of imaging my fresh install right before I installed the drivers, so that it would always be a fresh install. In the end I ended up using Barr3l's BIOS untouched, and just using CCC to OC to 800/1150 (which is where I want to be anyway), and it finally worked.

Now I have to wonder if it was just b/c of the 2 displays being hooked up. I did unplug my projector, but I didn't realize that may have fit into the equation. Too bad it took me over 6 hours to get it working.