Instructions
Click on the "Wii Shop Channel" from the Wii Menu.
Click on "Start Shopping." Click on "Virtual Console" on the next screen.
Click on "Search by Game Title." Type "zelda" on the keyboard screen with your Wii remote.
Scroll down to "Legend of Zelda: Ocarina of Time" and click on it.
Click on "Download." At the time of publication, the game cost 1,000 Nintendo points, or $10. After the game is finished downloading it will appear in a window in the Wii Menu.