I agree with John that the ECU/DME could be fried especially if like he said, someone "jumped" the battery and ruined the computer."
However, with that said:
1) Make sure you have spark and also make sure your Speed and Reference sensor connectors are tight. These connections, near the back of the engine/firewall, on top of the engine sometimes come undone...ask me how I know this fact.
When that happens the brain will not get the proper signals to fire the injectors.
2) So, with that said, get a noid light and check to see if you are getting a signal to the injectors.
One thing I thought of, since you said the car was parked for a while, is: could the car have taken on water? The reason I ask is, water can and will drip down from the area of the windshield into the cars cabin...AND guess what? If it does this, 9 times out of 10 the water drips into the ECU/DME brain and begins to corrode the electronics and the PCB board on the inside.
This last fact will always cause you grief because it usually takes a person many hours to finally track it down. (Once again, ask me how I know?)
Good luck and keep us posted, so we can be of help to you.
