All CPUs act different no way we could tell you what to set it at exactly Go to overclocking section and read the guide there on overclocking core 2 if you still hav question ask it there.
Read The Sticky (twice), try it your self then post back any specific questions you might have
LOL might as well read it 3 times for a newbie you will barely understand it the second time you will have to google all the terminology the 3rd you will hopefully get it.