Thanks for confirming, that makes me feel better.
That's a good point about having a bad CPU. I can't seem to figure it out without buying either the chip or the motherboard on my own, and if I take it somewhere by the time I pay for the diag. labor, I might as well have purchased a new motherboard or chip.
My plan is to buy an inexpensive MB, and hope that it's the old MB that is the problem. If it's not, then I'll buy a new chip as well (probably a Mobile 2500). I may be wrong, but I didn't think 2500 class chip would work in the old MB I have anyway, so I don't think I can get by without buying the new board regardless. (I don't have the old MB model off hand, but it's an old Gigabyte and I'm pretty sure it doesn't even support a 333 FSB. Could I run a 2500 chip in that and just have it scale down to 266 FSB?