Instructions
Search for Access Point
Click the "Wii" button in the lower left corner of the main Wii console screen.
Go to "Wii Settings" and "Internet."
Click "Connection Settings" and select a connection that's marked "None."
Select "Wireless Connection" and "Search for Access Point."
Choose which access point to connect to and click "OK."
Manual Setup
Click the "Wii" button in the lower left corner of the main Wii console screen.
Go to "Wii Settings" and "Internet." Click "Connection Settings" and choose an open connection that's marked "None."
Choose "Wireless Connection" and "Manual Setup."
Enter the SSID for your router. Click the blue arrow to the right of the box to go to the next screen.
Enter security information. If you don't use WEP or WPA security, skip to the next screen.
Choose whether or not to auto-obtain the IP and DNS information. If you don't choose to auto-obtain, go to "Advanced Settings" and enter your IP information.
Set the MTU value. Most users leave this blank, but it can be set at 1500 if you have trouble connecting.
Choose "Save" and "OK." Select "OK" again to test the connection.