I, too, dont suggest overclocking your laptop.
Seems to be that upgrading laptops are useless, all the things seperately are terribly expensive I would just give it some time and buy a lap top. I heard the best ATM vid cards usually cost like 800 dollars and they go out of date in less then a year. *shrug*
I own a laptop also.
I bought it and 2 years later its useless for gaming, and when I say useless I do mean useless.
Its a 2.6 ghz P4, 512 ram, and some kind of mobile ATI.
I figured id get a new one when its time, and if I do want to use 800$ for something Id use it on my deskstop because it would asually make a huge difference.