Instructions
Power on your Wii console and wait for the "Home" screen to appear, then press any button to continue on. If nothing happens, check the batteries in the Wii controller and try again. You should be brought to a screen with four windows at the bottom, each displaying a Wii remote and four lights underneath. If the lights are blinking, you need to sync the controller.
Open the small panel on the Nintendo Wii right below the disc slot, where you should see a small red button. Press this button to allow the Wii to begin sending out signals looking for a Wii remote.
Open the battery panel of the Wii controller and press the small red button underneath, then put the panel back on. Watch the screen: if the first three lights stop blinking while the fourth remains solid blue, then your Wii controller is synced with your console.
Place the Wii controller on a flat surface pointing toward the motion bar to allow the bar to calibrate the controller's movement. Once the calibration is done, a "Complete" sign will pop up on your screen and the tiny Wii controller on the screen will stop spinning. You can now press "A" and start playing your Wii.