"The first step is to turn off your phone. Once you have done that, hold down ‘Home’ and press ‘Power’ until the Motorola boot animation appears. After that, release ‘Power’ and keep pressing ‘Home’ until you see an exclamation mark appear.
Once you see it, release ‘home’ and press the ‘Search’ button once. If all goes well, your Droid X should now enter recovery mode. When you are done playing around within, press the ‘reboot’ system now’ with the volume key and press the camera button to return to your normal homescreen."