Sell it and buy a Dell. I don't know what voodoo they use to get their machines so quiet.

On mine at least, they designed it so that there was no CPU fan. The air from the power supply draws right past the CPU heat sink. This is with one of their pizza-box desktop models. Of course, this box has no AGP slot and uses crappy on-motherboard video. And has no space for extra hard disks, and no cooling for the single hard disk it does have.