With the BH6, I have successfully run up to the 1.1GHz Celeron with a socket converter. However, it does not run the Tulatin cpus or 133 FSB cpus.
So, if you shop the surplus market, you can likely find a 100 FSB P3 or Celeron that will work. The best of course is the 1.1GHz celeron. Second best is the P3 1GHz w/100 FSB.
Cwizard