I bought myself a wireless Mighty Mouse during Apple's Black Friday sale. For the life of me, I could not get the right-click to work, even after enabling it in the System Preferences panel. I tried tapping all over the place on the right side of the mouse and it worked maybe one out of twenty times as I muttered "Why couldn't they just build a real two-button mouse?"
Finally I called Apple, intent on getting my money back. I connected to the tech support department and explained the problem. He put me on hold for a few minutes and then came back and asked me to try something:
Mac OS X Hints
http://hints.macworld.com/article.php?story=2006122109112943