Computer Power Supply and Switch Wiring Questions

[rawfuls]

Hmm, now you've really sparked my interest.
How hard would setting up a potentiometer be?
I would assume it'd be much simpler than this, as the potentiometer would just step down the voltage itself?

The tri-cool's in the back of my case are controlled through the switch, which I've mounted to the back of my case.
However, now that you've brought this switching method up, I may have to just do this since it'd be much easier to flip open the front door, tick a switch, and be done with it then reaching to the rear (linc..) and blindly move the switch.

Does such a switch exist with 4 throws?
Possibly wire it to a low, med, and high (12V), and off...
In my case, I'd just set the manual switch in the back to HI, and control through the switch up front?