1997 Dodge Ram • 5.9L V8 4WD Automatic • 252,000 miles

I drove it home this past Thursday and parked it. Went to start it on Saturday and it wouldn't start. I'eve replaced the fuel pump, coil, cam sensor, crank sensor, rotor cap and button and the computer. I have zero spark to the coil. I'eve checked all fuses, grounds and solenoids and everything is showing to be good. I'm getting gas to the throttle body the motor turns over fine but no spark. No backfires spits or sputters. Pulled a spark plug wire and with a screwdriver held it near ground to check for fire and no results. I don't know what else to check.
June 23, 2014.

Okay, this is a tough one since you replaced so much already. However, have you checked to make sure none of the main fuses under the hood are bad? Also, have you checked the ASD in the power distribution box under the hood?