Instructions
Turn on the Nintendo Wii system by pressing the "Power" button on the front of the console.
Point the Wii Remote at the "Wii Shop Channel." This channel is typically located on the right side of the menu, unless you have moved it elsewhere.
Press the "A" button. If your Wii is connected to the Internet, you are automatically taken to the Wii Shop.
Purchase a game with your Wii Points by selecting the game with the "A" button. Choose "Download," then "Yes."