Ok. I've been using a cheap ATX power supply to power some gridseeds, now I'm going to really hack it (cut the wires). I take it, from all the googling I've done, all the yellow wires are 12 volts positive, and I just need to use the closest black wire as the ground. So that gives me power from the molex, the sata, the cpu, and the main atx bunch of wires.

I'll let you guys know. This PSU won't be used for anything else.