So it appears that I have run into a little problem...My computer power supply went bust! Mind you, it was only $17 from Addison Electronics, so don't buy power supplies from there if you know the franchise (my friend had a similar experience with one which just did not supply any voltage). So they're defective. I opened it up and thought that maybe the capacitors were busted, but they were fine; the voltage is just getting lost somewhere...Anyhow, I'll probably buy another one soon to get this project under way. I have a 13V supply that I could use, but I need more power than the box provides, since the peltier coolers suck up quite a bit of energy. In other projects like this they sometimes use a couple of power supplies like laptop chargers, but that's a bit of a hassle so instead I would prefer to use one power supply for the LEDs, peltier coolers and cooling fans instead of splicing and soldering wires everywhere. I'll keep updating on the power supply situation.