I got a new laptop (first problem

its running a intel duo core processor T5750 @ 2.00 GHz and 4GB of ram. the video card is an Intel GMA 3000. It can "marginally" handle FSX. I've gone through nicks optimization guide, and im still wanting more.
my question is, how much can i OC this, IM not looking for an extreme OC, just enough to see some performance out of it. Ususally, in everyday use, it in "power saver"