Things You'll Need
Instructions
Go to your Wii's main menu.
Choose "Wii Options" at the bottom-left corner. A new menu appears.
Choose "Wii Settings." Page 1 appears for your console's settings.
Scroll to page 2.
Choose "Internet."
Choose the first empty connection, such as "Connect 1: None."
Choose "Wireless Connection."
Choose "Search for Access Point." The Wii scans the area for wireless networks.
Select "OK" to view the results.
Choose your wireless network.
Enter the network's encryption key.
Choose "OK."
Select "Save Settings" and "Yes" to finish the setup.
Load "Guitar Hero" on the Wii.
Log into the profile that you usually play on.
Select "Multiplayer" from the main menu.
Select "Nintendo WFC." Your Wii connects to the "Guitar Hero III" online servers using your selected access point.
Choose an online multiplayer mode. "Auto-Match" hooks you up with someone from your friend list. "Stranger Match" connects you to a random player.