Just googled the chip runs on an fsb of 100 mhz, Im guess at the least your pc has pc2100 running at 266 so this gives you a threshold of 33 mhz fsb before you clock you ram. This times multiplier of 9 is a max overclock of 297 mhz before the ram clocks.I doubt you will get anywhere near this so have fun trying
if you have a bigger heatsink and fan bung it on ,remember when it first crashes up the vcore a touch if temp is still ok (make sure it is only a touch )