->  > Even a 250 Watt Computer power supply can make a very
->  > nice 12 volt 10 Amp bench power supply.

->  Or a model RR power supply.  

True. But watch out for the 5 volt loading resistor. It has to disipate
15 to 20 watts to stabilize the voltage regulation circuitry.
In fact I picked up a 2 Ohm 25 Watt Resistor at Gateway a little while
back to play arround with using a Computer Power Supply as a 12 VDC
source. 
And interesting the last time I was ar Fry's Electronics all of the
Quality computer power supplies listed the Minimum Loading on the
box.
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