Instructions
Insert the SD card that has the games you want to transfer into the Nintendo Wii.
Open the "Wii Settings" menu. This option is located on the bottom-left corner of the Wii's main menu.
Select "Data Management."
Click the "Save Data" option.
Select "Wii."
Click the SD card tab on the top-right corner of the screen. This will display a list of all of the games currently stored on the SD card.
Select the game that you want to transfer to the Wii and press the "Copy" button.
Click "Yes" to confirm that you want to transfer the game. The game will immediately transfer to the Wii's internal storage.