If you honestly believe this information on the website has damaged your reputation, hire an attorney and go to court to get the matter resolved. It will be money well spent if it leads to your peace of mind. However, I've got to say, if everyone in this small town already knows all this private information about you, then it will be very very very hard to prove the website alone damaged your reputation, and to convince a judge to do something about it.
It might be in your best interest to shut off your computer and forget the website. Whoever is posting will eventually tire of his/her nasty game, especially when he/she realizes you are not bothered by it.