Quick question. I want to buy a Time Capsule so I have a wireless back-up solution in my dorm room for my Core Duo MacBook Pro. But the CD MBPs lack 802.11n spec. My question is if transfer speeds during back-up and Time Machine use are reasonable over 802.11 g or if I shouldn't even bother (I know the initial back-up would take next to forever). That being said, we cannot have our college internet plugged into routers. My question regarding that is how easy is it to have Time Capsule work JUST for backing up and nothing more? I really don't want to take up my remaining USB port just for a hard drive I will continuously connect and disconnect. Thanks much for your help!