I'm interested in adding an internal ZIP drive, and a required additional IDE controller for it, to a tower PC.  The machine already has a (seldom used) 3.5" floppy drive, an 80 GB and a 40 GB hard drive, a CD R/W drive, and a CD/DVD R/W drive.  The unit has a 350 Watt power supply and I'd just like to do a sanity check on whether I'd be stretching the limits of the supply if I add the ZIP drive and controller card.  That is, where can I get ballpark figures on how much power  the above collection of hardware is using?  
Thanks for any advice here.

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