2000 Dodge Caravan car won't start

For about 2 weeks our car would turn over off and on. Yesterday and it quit completely. It never made the ticking noise that a starter would make. When you turn it over it makes one click at the start and you can here it but no constant click. The odometer goes to lines and zeros. We made sure the cables were clean and hooked to the battery, which we knew was probably not the problem and looked around under the hood for wires that may be loose or disconnected. We checked the fuse box under the hood and none of the fuses looked "fried". We are both unemployed and this is not an expense we can afford. Can you please help?