USB, I have a wireless router in the house and the Uni halls I expect to be going to also have wireless (I think).
While we're at it, this is the latest setup that I'll be saving for. Currently nothing is much above posturing, I need a couple of pay cheques first. But in a few months, unless something happens, this is what I expect to have.
Monitor
Case
PSU
MoBo
Processor
Memory x2
HDD x2
Graphics Card
Expansions:
Port
TV