3dXtreme has posted a guide about cleaning your cpu of old thermal compound and applying a fresh coat
Here's a quick guide regarding a process I personally hate! It's really a pain to clean the cpu then apply a thin, even coating of Arctic Silver II however for the overclockers out there it's also absolutly necessary. Arctic Silver II ensure the heat transfer from the cpu core to the heatsink. Using Arctic Silver II can improve the heat transfer by a few or more degrees. AMD suggests that thermal compound be applied between your heatsink and core.Read more