What motherboard do you have?
Actually I have 2. One is a Tyan S1862. This motherboard has 2 P2 SL2HA processors. The other is at my daughters house and not sure what it is. I have to check.
Ok, so what you need to do is find out from somwhere (motherboard manufacturer, google etc) the compatible CPUs with the motehrboard you have, thait will tell you what CPU you can put in or not. I had a look on the Tyanwebiste but i couldnt find anything.