[nicolette]

That happened to me!. I was learning to drive at the time and i thought i stalled the car (although we wern't going slow!). The car couldn't start afterwards although it tried really hard! ;p. it nearly caught and then did a tremendous backfire. i ended up ringing AAA and getting towed home!. Unfortunately i am still learning when it comes to these baby's...but when i looked under the hood i saw a loose wire where i was sure there hadn't been one before. When my dad looked, that was what was wrong. The wire for the starter motor (i think it was that one!) was shorting out against the engine. It was also too long...someone had hand twisted extra wire onto it with the copper thread hanging out!.Dad said i was lucky it didn't catch fire. And he was also suprised i had been running my car so long without problems. Apparently the wire had been loose and not attatched to anything since day one....just hadn't shorted against anything. So have a looksee. after i shortened the wire and secured it, my girl runs smooth again! ;p I hope it's as simple as that for you!
good luck B)