I want to get a PS like the Antec TruePower with multiple fans. All of the cases I own mount the PS in the top rear just above the CPU. Unfortunately the mounting hole orientation restricts the PS to be mounted with the extra fan at the top, facing up. It would seem to me that the ideal setup would be for the extra fan to be at the bottom, facing down, just above the CPU, and for the fan to suck the heat away from the CPU. Why is the mounting hole orientation set up such that the fan is located at the top? Is there a way (short of drilling new holes in the case) of getting the PS mounted with the extra fan facing down? Thanks for the help.