I have an iMac 1GHz PowerPC G4 running OSX 10.3.9 I want to get an external drive. I'm considering the 80GB OWC Mercury Elite-AL 800 Pro 7200RPM Complete FireWire 800/400 External Solution (recommended in some other threads). I would also want to be able to use it with my PC. Will it work, and will it be simple to use to backup my data on my Mac? I want to keep it simple. Or is there something better than this? Thanks a lot.