damn thats shitty! i bet all of those images on their site are stolen. You should contact the DA admins and see if they have some good suggestions for you. I would recommend sending them a "cease and desist" letter.
I would recommend checking with a person that could represent you (if needed) or if you wanted to just ask them questions. There's probably lots of information on the web about it, or you could always contact someone that has had this sort of problem before. Crazy that people just up and take stuff like this.