My car will not start?

I have a 92 Jimmy V6 and I was driving it and all of a sudden the car stopped. I have cleaned the battery cords and tried to jump the car and the only thing that comes on are the door lights when you open the car door. As soon as I try to start the car the lights turn off and the car will not even turn over. The radio will try to come on for maybe 1 second barely but then it turns off.I don't know what to do?I was told that it could be the solenoid, my starter, or my timing belt. I don't know much about cars and I don't have any money I start my job on Monday but I need to get to work. I am trying to fix my car the cheapest way possible but I don't know where to begin and I don't know much about cars.

Tia Brown
May 2005