[Mikuro]

There are two things you should know about the Mighty Mouse. One is that the "right click" functionality can be disabled. To check whether it's enabled, go to System Preferences' "Keyboard and Mouse" section. The second is that the right-click is a little quirky since it's not a physical button; you may need to release your pointer finger from the left side of the mouse before clicking the right side for it to register as a right click.

Control-clicking will work regardless of your mouse or setup.