I'd go for the blowing air on the laptop option, this is far easier to do and my intuition tells me this will work better. I'm thinking of knocking something up for my lappie - I'm thinking a 120mm fan running on 5V so low RPM and quiet.
OC'ing a laptop isn't a good idea in my book for both thermal considerations and the motherboards don't usually have any settings allowing you to overclock.
Also there is little to be gained from OCing a laptop as the video cards are usually not high powered enough to take advantage of a CPU overclock when playing games, likewise with the little 2.5" hard-drive etc.
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I have now left the Building
