taken from:
Hardware Specific Tweaks:
AIR FLOW:
H01- http://tweak3d.net/tweak/airflowtweak/
READ THIS. READ IT. it tells how to cure your entire case of hotspots, amazing. "perfect" cooling.
Level of Difficulty: User-Dependant (do you know how to cut your case?) (Easy to Medium)
the first one under Hardware...
EDIT: it's on the 5th page of the article i gave you, so actually read it to find it.