Work with the police towards a criminal resolution and then hire a lawyer. Simple case.
In VA if you are involved in an accident without insurance you are at fault, PERIOD, even if you are rammed at high speed by a drunk running a red light. The drunk goes down on the other charges, but you get fined ($500 minimum if I remember correctly), the accident is deemed your fault, and you get to pay, and pay, and pay.
Good luck.