All the above answers are so true, but make sure your getting fuel, a example plugged fuel filter but especially your fuel pump. A easy way to check is to get a short metal pipe, put it in the gas inlet or against the gas tank and have some one turn the ignition key on. You don't have to crank the engine. You should hear a humming sound. The PCM is a "expensive dealer option", and yes you need to know everything about your powertrain so you get the right one. Also I hope you did not bust you timing belt.
Good luck, Wayne