Instructions
Connect your Wii to your Internet network using an Ethernet cable.
Turn on the Wii and go to "Wii" on the bottom left corner of the screen, then "Wii Settings." Click the right arrow twice. Select "Wii System Update."
Select "Yes" then "I Accept." The Wii then installs any updates.
Click the left arrow and then select "Internet."
Choose a connection that does not already have settings.
Click "Wireless Connection" then "Search for Access Point."
Click "OK" then select your wireless router. Enter your security key for your router.
Select "OK" >"Save Settings" > "Yes."