Hi - just bought an iMac Power PC G4 (That's what the Info bit says). It's just had operating system 10.3 put in, and it's a really great little computer, visually and speedwise etc. BUT to get online with it I need an airport card, which I'm happy to buy somewhere, but have been asked which one I want - Airport or Airport Extreme. I honestly don't have a clue. How do I find this out? Any information very gratefully received. In hopes.. thankyou.