Well, assuming you're aware of the risks such things getting fried due to the lappy not being able to cope with the heat, data corruption b/c of an unstable system and so on...
I would not recommend a BIOS OC on a lappy. Reason being, should you botch at some stage, you'll likely end up with a useless piece of plastic, metals and semiconductor material. I would recommend software OCing; get a program like CPUFSB to manually set your PLL which forces the other clocks in your system higher. Now, in 99.99% of cases laptop's ain't clockspeed locked, which means that other components such as RAM, PCI(-E) bus and whatnot will be affected as well, meaning that ANY component can start stuffing up on you, not just the CPU b/c of an overly high OC...
Anyways, on to the software. CPU-Z to watch your speeds, SysTools may let you manually adjust settings such as RAM speed or even voltage/whatnot (helped me to OC my HP stock machine from 1.8 to 2.1GHz, stable), CoreTemp or a similar program so you can watch your temps, and the last is CPUFSB that lets you manually set your PLL... there was another program that dod the same thing but I forget the name... damned. All of them should be very straightforward to use, assuming that you do know about OCing which I believe you do.
