Instructions
Pull out any game cartridges from your DS, and turn on the system.
Tap your screen with the stylus, or press "A" when the start-up screen appears.
Select the Nintendo DS icon on the lower portion of the screen
Select the brownish-yellow crosshair icon on the right side. The calibration process begins.
Touch the red square on the screen with your stylus. Each time you touch the square, a new one appears. Repeat this step until a "Confirm" message appears.
Tap "Confirm." A new message opens.
Touch "Quit." A confirmation prompt opens informing you the system will reset.
Tap "Yes."