Everything you could ever want to know on OC a C2D/C2Q:
http://hardforum.com/showthread.php?t=1198647
Although I don't think OC is something anyone should try without background knowledge first. I think it would probably be easier for you to forget about OC and go with a C2D/C2Q
You also may want to sign up on the hard forum board because there is a wealth of knowledge there and a lot of computer people there that can help you out and a lot of threads to wade through.