Take your wii to a friend's house with wifi. Have him change the router's ssid to the university's ssid with no wep/wpa and config your wii to connect through his router. Make sure you get the connection test to work there. Then take your wii back to your room and it should connect.
Or find someone in the dorms running a wifi router that bridges the connection and use that.
Or find someone in the dorms running a wifi router that bridges the connection and use that.