Erm, well this is kind of an overclockers forum

If you're mobo's bios is anything like mine, which I think it is, then it should look something like
this where you can see the CPU configuration, and the Jumperfree configuration, right ?
Well, at the CPU configuration you can disable cool&quiet, then you go into DRAM configuration to mess with your timings. You should set TCL to 4, then the next number to 12, then the next number to 4, then the next number to 4 as well, voila, you got very relaxed timings, A.K.A 4-4-4-12 or 4-12-4-4, people use both kind of connotations. Also set your memory divider to 266mhz, that's pretty conservative, later on you can try 333mhz, or even 400, depending on how good your memory is! But for now put the memory at 266mhz, it at least won't be holding your OC down.
Then you go into the Jumperfree settings, like shown
here, set the cpu multiplier to the highest possible, 13 I think it is, set the PCI express clock to 100, and the PCI clock synchronization mode to 33.33mhz! Then slowly start upping your FSB, I'd try 210, then 220, then 225, then 230, 235 etc, till it doesn't boot. Then simply back down 5, and boot into XP. Stresstest it, chances are, it will not be stable, it needs more vcore! You wanna watch temps too ofcourse, don't let them go above 60 celsius. Depending on your cooler you can do various vcores, but don't go higher then 1.45c, that seems the be a somewhat conservative maximum that people agreed upon. Chances are it will OC to perhaps 3ghz at 1.35-1.4vcore.
Keep testing and testing till something works, is stable, and doesn't overheat. Could use small fft's to be on the save side, or just blend in orthos. My experience is that games and such using both cores, like shadowrun/two worlds, don't get my temps above 50 celsius, small fft's get my temps at 55, so 5 degrees celsius margin. Once it's stable, could try lowering the timings and upping the frequency it runs at. Keep an eye on it with CPU-Z, and remember, higher vram often means it will do higher frequences, but you gotta know the max save vram for your ram. My ddr 400 cheap ass value kingston is save from 2.5 to 2.7v, but it differs per ram!
Any questions ?
Good luck !