Depends on the number of access points are already in place. From what your saying, doesnt' sound like there are that many. You could easily put in a wireless access point / wireless router. All you have to do to make sure you don't interfere with campus equipment is make sure you are using a different channel, don't broadcast the SSID, and don't run DHCP on it. Your signal won't be stepping on campus wireless signal, since you can't get the signal from campus wireless access points.

Scott
http://www.AAApcMechanic.com