When we would try to start the car we would have to keep the key turned forward and it would sound like the battery was dead but then the car would start. If we drove it for more than a mile we would have to let it sit for a half an hour and cool of before we could start it again other wise if we sat there and tried to start it or tried to get a jump because we thought the battery was dead the car would have to sit for hours. We ll tonight we got in it to take off and went to start it and it cranked over a few times and then nothing. there is power to everything it just won't crank not even a click. We think the silinoid??? This is our only car due to our stratus's head gasket going and we need to fix it by sunday so plz any ideas would help out sooo much thanks.

The Solenoid would make a clicking sound...does it?
From what you are saying it seems that wouldn't be the problem because you said it would crank the starter (right)?
If the starter does not always crank try looking for a bad (ground) from the battery then to the starter.
Just a thought.

no it will not crank but it is getting spark