My system is running hot, and I need to add some fans to the side panels. I have never used a hole saw, and really want this done right. I want to add two 80mm case fans to the side, one intake, one exhaust. I got a full tower case with 4 hard drives, 2 optical drives, and dual PIII 866 running. Can someone give me some detailed instructions on how to do this? And all the supplies I need to get? I already know which case fans I want to buy, but what materials do I need to cut the holes and add the two fans? THANKS!!