NOOOOOOOOOOO! No! No! No! No! No! And did I mention No?! If I didn't already say No! then let me take this opportunity to say NO!
Where I work, we've had a huge number of those (probably a slightly newer model) come in for all kinds of heat related issues. They were just a massive headache to deal with on pretty much every single front.
And on laptops in general, with very little space for the heat generated by the CPU to go, you do NOT want to be creating MORE heat. Most laptop makers will go with the absolute bare minimum they can on things like fans, so they can cram in more ports or a better video card or something else.
Consider yourself lucky the thing isn't a smoking pile of molten plastic and silicon already, and be happy with that. And I'm only mostly joking with that comment. There have been units in the past where the idiot vendor tried to stuff a desktop CPU into a laptop, and it created so much heat it literally melted the plastic of the case. I want to say it was HP, but I can't remember for sure.
Hello all, I am a complete newbie to overclocking but have a huge love for computers and the more I get to pick apart and put back together the happier I am!
I have a Toshiba Qosmio GX/G8H, the bigbutt gamer laptop model:
Intel Core 2 Duo P8600 at 2.4 GHz
4GB RAM (running on 64-bit Win7)

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic