Broke,Repo, Any advice ASAP PLEASE?

I just started a new job, I have 4 kids, I really need my car and I'm going through a divorce.. Now the Repo man wants my car because I owe $1000.00 on it and I don't have it up front. I don't have axcess to that kind of money all at once.. What should I do does anyone know of anything..I can't lose my car. I have a job now I need help ASAP Please any one...