Instructions
Turn on your Nintendo Wii and press "A" on the Wii controller when prompted.
Click the "Wii Options" button located at the bottom left corner of the home screen.
Click "Wii Settings" and click the arrow pointing to the right to be taken to the second page of the "Wii System Settings" menu.
Click "WiiConnect24" and click "WiiConnect24" on the following page.
Click "Off" and select "Continue" to turn off WiiConnect24. You will now have turned off WiiConnect24 on your Wii 3.3E.