[sdiy] Power Supplies... Whutchugot?...

[Studio 271 Productions]

Does anyone have any problem with using "excess" (as in "extra") 
computer power supplies in synths? I know they are generally +-12 and 
+5, but if that's all I need is there any real problems with using 
one? The ones I have are pretty high in amperage (>10A), so I know 
they'd be able to power a huge synth on a good day. I'm just worried 
that since they are designed for running intels at 100-300MHz, is it 
a plus or a minus in terms of noise, spikes, etc? Maybe someone could 
just point me in the direction of a nice tutorial on power supplies 
in general because I've got a friend who needs to rewire the mains on 
a transformer in a little D/A Trainer he found. Thanks to all who 
help!

-Drew