I found this picture...yours wont be hard at all to clean
http://www.insidemylaptop.com/images...-bluetooth.jpg
get a can of air........blow back through the exhaust vent holding the straw straight and about a quarter inch away.do this in several areas.
Dont bend the fins with the straw and be sure to blow straight or you can bend them.
Remove the cover that covers the fan and blow that area clean with air
Only use air for a few seconds at a time...to avoid condensate problems.
Its about a 10 minute job....piece of cake
dont drop anything in the unit.
Dont touch around on anything due to static electricity.
place a towel on the kitchen table,to stop from scratching the unit and you are ready.