Replacing the bushings is really pretty easy. The hardest part for me was finding the darn HELP! kit. Let me see how much of this I can remember.
0. remove the negative battery terminal - just to be safe.
1. Pull off the wiper arms
2. Remove the body panel thing that's over the motor and linkage. It's four or so screws on each side as I recall.
3. Pop the hood and remove the screws that hold the linkage / motor in. They are along the back firewall of the engine compartment in the top middle.
4. Unplug the motor.
5. Push the nubs down that the wiper arms attach too and wrestle the whole bastard out. Pay attention to how it goes in, lest you forget when you have to put it back in...
6. Get the 3 bushings you'll need out of the help package and remove and replace the bushings one at a time, taking care not to mix up the way all the parts fit together. Trust me on this, I wasn't quite paying attention and almost screwed up how they all go back together. A little grease will help the bushing slide back in and rotate freely.
7. Wrestle that whole assembly back in - the biggest pain in the but of the whole job.
8. Re-attach the assembly to the firewall, and the plug to the motor and the negative battery terminal.
9. Put the cover back on, reattach your wipers, wet the windshield and try them out!
10. Pat yourself on the back and wonder why you didn't do this easy job much, much sooner.
-Tom