[billyo]

we used canned compressed air at work all the time, the trick to this is not to shake the can, and just pull the trigger once , not continous caused this will freeze up all the moving parts inside ( i mean real frozen ) and you have to be around 6-8" away, dont stick the nozzle in the compartment, if your too close this will blow too much air preasure ,this will make the dust circulate inside, i have done this to all my laptops/pc and the cd/dvd drives still works great..