I have an old P3 700mhz HP that I've been using just to listen to music and surf the web. I'm wanting to overclock it but I'm not really sure where to begin. I've read a lot of info on it but some things I am unclear about. First, what is the best program to download to change the processor speeds? Second, how high can I go safely? I have upgraded cooling, I have a 80mm intake fan at the bottom of my case and a 80mm fan at the top for exhaust. CPU temps stay around 33 celsius right now under light loads.