1. Take your case outside, grab your can of compressed air, and unleash a storm. 2. Clean out all the fans, and if necessary, replace them. 3. Have a strong 120mm fan to blow warm air out of the case and a 80mm fan blowing cool air into the case. 4. Re-arrange the cables in your case, use twist-ties, elastics, whatever, bundle them into empty drive holders or in corners. Having as much out of the way as possible can literally make a difference of 2oC in your case. 5. Upgrade your CPU heatsink, but make sure it is compatible with the socket and that there is enough room for it, so it is not blocking any needed slots/connectors on your mobo. 6. Use Arctic Silver 5 thermal paste for your heatsink. Put 3/4 the size of a grain of rice onto the center of the CPU, put a small piece of thin plastic over your finger and spread it over the entire surface of the CPU. 7. Vacuum the room frequently. Dust collects, too much dust can conduct electricity. Also, do not keep the case on carpeted floor, put something non-conductive under it or put it on a desk if it isn't already. Hardware wise you might consider new parts, including a case. I recommend getting: The Antec Sonata II The Antec SLK2650-BQE Mid Tower The Antec P180 Mid Tower You might try and locate those cases on tigerdirect or newegg. Thje reason why I recommend Antec is because the cases are made nice, the included fans and strong and quiet, some come with a built-in PSU, and Antec makes good PSUs, and Antec just plain and simply knows how to make good cases. Cheers, Jeremy