Ok, stupid question. Have you checked all the underhood and inside fuses? With the spark I'd suspect you've blown a mega fuse somewhere. Start with the underhood fuses first and go from there.

And when you say "it won't start or turn on", do you mean that when the battery is connected and you put the key in the ignition and turn it to start that there is absolutely NO power to anything, or will the engine just not turn with the starter?