I have the same MB but with the P3-733 coppermine. As long as your processor supports the PC-100 you should not have any problems. Remember the MB only supports a total of 512 of ram memory and only 3 slots for the chips. I had a email promo from www.tigerdirect.com and they had a special of PC-133 memory $60 for 128meg dimm, cheap if your in need. I paid from crucial $348 for two 128 meg dimm. The PC-133 memory should work fine with that CPU, PC-100 would just be minimum to make it work. I had a PC-66 in which I put a PC-100 dimm with a P1-233mmx and it worked fine with the older PC-66 memory.
I just put in a ATI Radeon 32 ddr card where I paid $199.99+ $50rebate from CompUSA. I had been using the onboard graphics. (just remember to put the video into standard VGA before switching to the AGP, I had problems installing because of not remembering to do such, lucky for backups "GHOST", maybe even install the drivers before shutdown and putting in the AGP card this may have been my problem too. I put the drivers in after installing the Radeon. But my own ingorance and my own fix.
Best of luck
James