jenspetersen - thanks, but I don't want to go above the specs of the 440BX's 100MHz and the PC100 SDRAM. It's not something I want to support after I sell it.
everett6 - Thanks, that's exactly what I needed to know. I forgot about the PIII667EB being multiplier locked at 5x. I had a feeling I was overlooking something. Thanks again for the heads up.