To answer your question on how did I get my P4 to overclock that well.
I have an Antec Case(w/Antec 430 watt p/s), with three stock fans, one in front if case that is also in front of disk drive, another also in front. The third is the one on the side blowing in on video card and mobo. Also bought two extra Antec Smart fans set to blow out the rear of the case. Then there are the two on the power supply also. This setup runs real quiet believe it or not.
Cooling on the cpu, I bought the Thermotake(spelling), spark7/copper heatsink fan from Newegg for like $24.99 plus a few bucks shipping. The spark 7 has three options, I mounted the thermal sensor on heatsink option so it increases speed of fan depending on temp of cpu. I lucked out on the P4 2.4b and received a C1 stepping cpu(Newegg also), and I hear these are a little better over clockers then the B0 cpu's. Running at stock voltage on cpu and memory(memory btw is Crucial PC2700-1 stick). Running ASUS P4PE mobo. This was my first PC build, but used to build Mini-Computers for a living(10yrs). The multiplier(I believe that is the setting(I am sure you know what it is), was set to 174. I did get a little more since post but started re-booting at 179/3221.59mhz, even with a one notch voltage jump on cpu core and memory. Hope that helps.