Somebody snuck into my office (I work in a huge school) and messed around with my computer. They changed my login name and password so that I can't get into my system. Does anyone know how I can log into my computer now? I could go through my city’s technology department, but that could literally take a few months or more. The computer is a Dell and I believe the Log On security on it is Microsoft 2000. Any help is much appreciated.