Recently I have noticed a growing interest/debate reverclocking.
Some of the people who would like to try may benefit from a little backround and explanation of what exactly you are getting yourself into.
I found this article entertaining and informative and hope you do too.
The Principles of Overclocking
Edit: do not be deceived by the title. This is not a tutorial, nor a "insert finger A into slot B" step by step manual. It is more about the philosophy and reasoning behind the act of clocking than anything else. The specific facts regarding your specific rig are easily findable on the web. Frankly ( and I do not mean to be harsh or snobbish here, merely cautionary) if you can't find the info on your own, you are not ready to begin the process. Almost inevitably, at some point you will be in uncharted waters, and the ability to think/reason for yourself will be all that separates you from having a sweet running machine or a rather expensive doorstop.