JWMiddleton: For AMD DDR motherboards, I recommend the Epox 8K7A. I have this board with an AMD 1.2GHz. and have honestly had zero problems with it. It's got 6 PCI slots, 2 DDR DIMM slots, and that neat "boot code" LED which identifies boot/POST problems on your board. It's based on the AMD 760 chipset, which is the best DDR chipset out for Socket A, IMO. Although, if you want to wait a couple of weeks, you'll probably start to see boards based on the improved KT266 chipset which might outperform current AMD 760-based boards.
If your dealer doesn't carry Epox boards, try a Gigabyte 7-DXR (not a 7-DX) or an Asus A7M266.
Good luck!
Nick