Average electricity cost

Alright, with all those talk about XBOX360 eating alot of electricity got me wondering, I'm on my computer alot, about 3-5hours a day, with a 19' inch monitor, around how much would that cost monthly? Just wondering.

>>6
A-whu? When did I say a power supply always draws its maximum rated wattage? Yes, a PSU will only draw what power it needs, but if the components demand more than the PSU can deliver, chaos ensues. That's why a 150W PSU won't drive a modern PC in a stable manner, if at all.

>>7
Then I suppose the heat the power supply produces just comes from nowhere then? On this board we obey the laws of thermodynamics! My calculations were based on fairly intense usage.