A friend has a 4th generation iPod (clickwheel) with a Firewire power adapter, and both FireWire and USB cables for plugging in the iPod. They have a PC, so the only reason they use the Firewire cable is to charge it. Question is, can I give them my USB power adapter, and they give me their Firewire power adapter and cables, so I can hook up my iPod Color to my Firewire port instead of my USB port? Will the Color charge with the power adapter and plug into my PowerBook correctly, and will their Clickwheel charge correctly with the USB power adapter? I like to have my iPod plugged into my computer most of the time, but that just leaves one free USB port, and I'd like to have two.