I just bought a new 2TB Seagate external hard drive that I want to use for an external back solution. Since my Linksys WRT-610N wireless router has a USB port on the back can I use Time Machine to back up our 27" iMac? How should I format it? And will I be able to access the hard drive while I'm out on the road? I'm new to this networked hard drive scenario so if there's something I need to set up in the settings of the Linksys router, please let me know. Anything you can tell me about what I'm trying to do is much welcomed.