I posted this a while back at Hardforum:
It seems as if he's missing the entire point of having fans. Fans don't change the temperature of the case. They don't cool things. The move air. The concept behind having a lot of fans is that they move the hot air out of the case, thus, cooling it.
Your room is hot because you have so much crap running, and it's not doing anything but moving the same air around in your room. It's like sitting in a car, with the windows up, turning the AC off, but with the fan on, and using the re-circulated air. You may feel kinda cool, but it's really just because there was a momentary gust of air coming past you.
The best way to fix this is to go to the local walmart or kmart or something, buy 2 crappy box fans. (it'll cost you like, 20 bucks, less than buying 2 PC fans.) Open your window, and put one of the fans there, blowing out. Open up the door to your room, and set the other one there, blowing in.
This will expel air from your room, because the fan blowing out the window is forcing air to move in that direction, and because matter is always rushing to fill empty space, the air from the rest of your hosue will rush in, compliments of the fan in front of your door.
That's how a refridgerator works. It does nothing more than blow the hot air out of the box. The few cooling elements in it are set up so that their heat stays outside of the box, and the cooling is done inside. Call me crazy, but mounting your fans on the outside of your case can have some nice effects. *waits for new trend to begin*
A ceiling fan is about as effective as the fans inside your PC. nothing but circulating your air.
You can also do other things, like turn off and unplug anything you aren't using. I turn off my monitor and speakers when I'm not at my PC. I also never turn my light on during the day, unless it's raining and too dark. I unplug my VCR until I go to use it, because even having that little clock blinking at me is generating some heat. You might actually find it more effective to turn your ceiling fan OFF when you aren't in the room.
Just some food... for thought. Actually, a 5 course meal for thought.