OK, so I keep saying "Right Click" this and "Right Click" that - how DO you "Right Click" a trackpad. Well, there are a couple of ways. Take a look here...
In the Trackpad applet (image below), select "Point & Click" - then the "drop-down" arrow and select how you'd like to set it up. Depending on which option you choose, the movie applet will demo how it works. I prefer the two finger tap. | You can set your Trackpad preferences in System Preferences Trackpad. |
But those aren't the only options. You can also hold down the CONTROL key and click the trackpad to create a "Secondary" (or Right) click.