well, you can get a loaner after you bring your computer to the helpdesk. It's usually one weekday or less after you apply for it.
and the USB printer cable is something like this
. Basically, it's the same thing that you have now, except instead of plugging into the big parallel port on your computer, it plugs into your USB port. You've got two USB ports on your computer: one on the left, just to the side of the headphone port, and one in back, next to where you plug in your network cord. They're rectangular ports.