Instructions
Turn off the Wii. Open the small panel cover on the front of the Wii.
Insert the SD card into the slot, and then turn on the gaming console. Turn on your television. Press the "A" button at the "Warning" screen to proceed to the Wii menu.
Select the "Wii Settings" icon from the Wii menu. The "Wii Settings" screen loads.
Hover the Wii remote cursor over "Data Management," and then press the "A" button to select it. Click on "Wii Channels."
Select a DLC channel, and then press the "Copy" button with the Wii remote. Select "Yes" from the list of available commands. The content is copied to the memory card. Repeat this for every channel you want to copy.