My dads computer is a 2001 HP pavilion desktop. P4@1.8 ghz 512mb of ram and an 80gb HDD. It's an ASUS mobo thats really old and I'm not so sure if its safe to overclock the cpu. The video card is already overclocked, it's a geforce2 mx400@237/188. I cant find any cooling solution for such old parts, that I have to keep the side panel off and have a desk fan blowing inside the computer. the Cpu fan is a coolermaster heatsink/fan. Is it safe to overclock?