Can't start, no spark getting to plugs

Thanks for the help. Yes, the coil is the stock coil. I have heard of using a coil that is made to use with the electronic ignition kit that I have, but the current one has worked just fine for the past 10 years or so. I wonder if I should look into the coil as the possible culprit? How would I know or check to see if it's bad? I have tried the screwdriver method with various plug wires, haven't seen a single spark yet. I'll take a look at the rotor and compare it with the old one. Resistor type plugs and wires? Not sure, I'll check that also.