Things You'll Need
Instructions
Turn on the Nintendo DS and Nintendo Wii. Bring up the main menu for both consoles, without loading any games or other options. Make sure you have established an Internet connection for your Wii before continuing.
Select the Wii Shop Channel from the main menu. Read the legal agreement concerning sending personal information, such as credit card information, to Nintendo, then click on the "I Agree" button.
Access the Wii Shop Channel and select the "Nintendo Channel" option. Click the "Download" option by pressing your "A" button. Click on the "OK" button and then click the "Yes" option to start the download.
Select the "Wii Menu" option from the top of the screen to return to the main menu. Choose the "Nintendo Channel" option. Click "I agree" to agree to the data-sharing settings.
Select the "DS Download Play" option on the DS by pressing your "A" button or using the touch screen. The DS will automatically connect to your Nintendo Wii and any DS demo you download will appear on your DS.