Virginia does not have debtor's prisons nor can you be "locked up" for not paying a bill or judgment. If someone tells you he will have you locked up for not paying a bill, get all of his information and advise the court. A judge CAN put you in jail for not appearing for court or answering questions per a court appearance from valid interrogatories. He is a debt collector and normally gets paid a percentage of what money he gets paid from you. You can't pay the judgement, he does not get paid. He will browbeat you, threaten you, tell you that he will have you locked up, I have even heard they will have children taken away from you if you do not pay the debt. It is wrong to do this. Tell the court; you won't go to jail simply because you owe money. Good luck.
I fully agree with the posted anwers. In addition, I strongly suggest that you comply with any appearances and tell the court that as soon as you have a stable income you will make every effort to begin payments on the money you owe.
This is my opinion and should not be construed as legal advise for your specific case as there are many more facts which you have not provided.