Things You'll Need
Instructions
Navigate to the Wii Shop Channel from your main Wii menu. Click the icon for the Wii Shop Channel and wait for it to load. This can take a minute depending on the speed of your Internet connection.
Acquire Wii Points with which to purchase new games. You can do this from the Wii Shop Channel by clicking the "Add Wii Points" button in the middle of the screen. If you have a Nintendo Points Card (which is good for not only Wii systems, but also DSi systems), enter the activation number on the back of the card after clicking "Redeem Nintendo Points Card."
Choose the NES game you would like to purchase: From the main Wii Shop Channel screen, click "Virtual Console," followed by "Search by Category," and then "System." Choose "NES" from the list of systems to peruse available NES games.
Click a game you would like to play. Click "Purchase" to use your Wii Points to acquire the game. Wait several minutes for the game to download and install.
Start playing the retro NES game by clicking the icon in your main Wii menu.