I was in an accident, i didnt have insurance,he plead guilty in court, now he wont contact me!!!!!?

Go talk to he prosecutor. Get his information and a copy of the judgment and file for damages. You may have to take him to small claims court. Get three estimates for the damage, go for the middle of the road one and keep the estimates and the repair bill for court. Since he has admitted fault you will probably win, but if he doesn't show up or pay the bill you can apply to have his wages garnished...is all THAT worth $300...if it is then go for it, if not swallow the loss...it's only $300