My 2000 Honda Civic LX won't start. I was told it was one of several things wrong, either the starter, ignition, or something with the clutch. All of those I was told were fine. He said it was the power relay that was bad. It is not available at Auto Zone or Discount Auto Parts, and is $76 through Honda, but I can't find any information on this part... HELP! What is this part for and will not cause my car not to start??

It's the main relay, which I doubt is the reason why you Civic does not start. If your situation is where the starter motor cranks but the engine does not start, the problem is likely with the distributor, if the Check Engine Light comes on for 2 seconds and then goes out, when the ignition switch is turned to ON (Position II). Normally, replacing the Ignition Control Module (ICM) and coil inside the distributor solves the problem. Apply silicone heat transfer compound to the back of the new ICM.