I'm thinking about getting the Airport Express to use at the dorm. Will I notice any speed increase using this as compared to a 802.11g router? Or does it depend on the internet provided by the uni? I guess I'm confused as to how wireless networks work. If the hardwire hardwire, ethernet speed is say 60 Mbps, then the 100 Mbps capability of the AE would be pretty worthless, right?