Well for a socket 370 solution the Tekram P6L40-A4E is available on Tekram's website for only $25. This is an old LX board but will support Celerons (with a slocket) all the way up to 733mhz. That's a fast chip coupled with a $25 board. You're not getting as fast of a solution as a Duron but the motherboard price is CHEAP. I actually ordered one of these a few months ago and stuck it in my closet, but I've recently started a project to build a 633 Celeron system with it and some other parts I got lying around.