I currently have a Time Capsule, but the drive on it is too small for what I need. I was thinking of getting an Airport Extreme base station and plugging a hard drive into the USB port on it. Can I use that drive wirelessly with Time Machine? If so, can I also use the USB port on the Airport Extreme with a USB hub and have the hard drive and a printer working at the same time? If that isn't an option, does anybody have a suggestion for a good wireless backup and wireless printing for 2 MacBooks? Thanks for the help.