This might not be something you want to do if you expect one day to use your warranty on your laptop, since they usually don’t cover personal foul-ups, but the fine people at Instrucables have made a nice set of instructions for cleaning your laptops inner parts.
The importance of being careful while doing this is essential, since as said above, the company would most likely laugh in your face if you tell them how the computer got messed up. If your feeling lucky and are confident in your tech skills, grab your Q-Tips and have a blast. Stopping an over-heating laptop yourself might just be worth the risk. — Andrew Dobrow
Cleaning your laptop cooling system and Clean the dust out of its heat sink [Instructables, via Consumerist]