How to overclock my Phenom 9850 to 3.0 ghz?

Bump up the voltages a bit, take it to 3Ghz and then test for stability. If it's not stable then increase the voltage a bit more until it is. Remember to keep an eye on those temps. Oh and be prepared to get a bunch of answers from computer illiterates who think overclocking will destroy your computer lol. If done properly, there is no danger whatsoever.