If you're thinking of building a new AMD system from scratch and you want a solid base to build from I recommend the Asus A7V133.
The Asus motherboards are great to work with. I have an Asus A7V, and it is a pleasure. The manual is easy to follow, and actually - helpful!

The A7V133 is just an A7V with an upgraded chipset. Allowing 133 MHz FSB. Which means that when you are ready to upgrade to one of the 1.2 GHz T-birds you'll be able to get the (266 FSB) version.
Since I am recommending a KT133A motherboard that makes the memory recommendation easy. Crucial CL2 SDRAM. Right now you can get 256 MB for ~ $90. That's a steal. Heck, get (2) 256 MB DIMMs and you'll be set for a while to come. If you ever intend on running Win 2k server you'll be glad you have that extra RAM.
http://www.crucial.com/webpromo/ Just hit that link and you'll get 15% off on your purchase. Note: Don't register with their web-site. You'll get bumped down to 10%. Just hit the link, and look for the CL2 SDRAM (168 pin DIMM).
http://www.crucial.com/store/partspecs.asp?imodule=CT32M64S4D7E
That's the link for the 256 MB CL2 DIMM.
One other reason for my A7V133 recommendation. This is a mature motherboard. Even though it has just been released. It's a proven performer. Other motherboards may perform 2-3% better under certain circumstances, but at some point stability has to count for something.