hi, My mom just (finally) started using her iMac which was purchased years ago, and I'm in charge of making it run and keeping it modern. My question is simply this -- I don't want to run ether cable across the house, so I'm wondering if this machine is compatible with wireless USB adapters, and if there is anything else I should know about this. I'm more of a PC guy these days, except for using a 13" Macbook on occasion, so I don't really understand AirPort and whatnot and how that might translate into modern technology. Also, what is the highest level of OS X that I can upgrade on this? I guess I have to first connect it to the internet -- or not? Thanks for the help, I appreciate your time.