Well, there's a bunch of ways for sure but you could pick up this book:
High-Tech Harassment: How to Get Even With Anybody Anytime (Paperback) or Don't Get Mad, Get Even (Paperback) by George Hayduke (Author)
at Amazon.com. Its just full of neat things to do(revenge) to somebody thats a jerk whom ya gotta deal with day in and day out!! :-)
Larry M.