Sadly, I’m not a good enough developer to have clever and hacky solutions to anything. In college I did once use Visual Basic to spoof a Novell login screen and steal other students’ passwords and write them to a diskette, which I’d recover after they walked away from the machine. The worst I did to them was log into their messaging and send them messages from themselves. Oh, and I also set up an “underground” web site that the campus sysadmins didn’t discover for a while. I used it to set up a forum where students could sell their used textbooks for better prices than the buy back program at the campus bookstore.