Can Computer Power Supply Be Used to Charge Car Battery?

[buggie@mirac.unm.edu (stephen e buggie)]

CAN COMPUTER POWER SUPPLY +12V LINE BE USED TO CHARGE CAR BATTERY?
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Help!  One of my cars has gone dead --- electrical system is out.

My battery charger is also dead, and I am faced with the prospect of 
buying a new battery charger.

QUESTION:  Can an IBM-style power supply be used to charge a car battery?
It has a +12v line that might be suitable.  The larger ones (200-230 
watts) give 5-6 amps on that line.

If this is feasible, are there any complications likely?  To avoid 
overloading its yellow wire, I could run several yellow lines in parallel 
to the line going to the battery copper clamp.  I have many IBM-style 
power units on the shelf and don't mind dedicating one of them for 
car battery-charging.

Please respond quickly (today -- Monday) because my wife insists that I 
buy a new battery charger otherwise!

Advice appreciated.      Steve Buggie			buggie@unm.edu