Daughter has laptop that will not connect to internet at college but will when she returns home. The home connection is DSL wirelss. College connection is via a jack. Roommates connection is fine. When my daughter connects to her jack, still does not work. Her connection worked initially but no longer does. Dell Inspiron 1150, Windows XP professional. Could this be a virus that changes IP address and how do we correct aside from calling Dell support and talking to tech support for an hour?