Things You'll Need
Instructions
Download the latest version of the Nintendo Wi-Fi Connector software to your desktop, then double-click to unzip.
Open the unzipped folder and double-click the sub-folder "NintendoWFCReg." Double-click the file "Setup.exe." (If you are using Windows Vista, right-click the file and select "Run as Administrator.")
Connect the Nintendo Wi-Fi to your computer's USB port when prompted, then click "OK" to finish installation.
Turn on your Nintendo Wii or DS and access the "Nintendo Wi-Fi" menu. On the Wii, this menu is accessed by clicking the "Wii" icon in the lower-left corner of the main menu, then clicking "Wii Settings," then "Internet," then finally "Connection Settings." On the DS, access the "Nintendo Wi-Fi" menu by booting a Nintendo Wi-Fi compatible game cartridge and selecting "Online" or "Nintendo Wi-Fi" from the game's main menu, then choosing "Nintendo Wi-Fi Settings."
Select "Connection 1," then "Wireless Connection." Choose "Nintendo Wi-Fi USB Connector."
Wait for the console to confirm your connection, then click "OK" to finish setting up your wireless connection. You now can play online by selecting "Online" or "Nintendo Wi-Fi" from the main menu of any Nintendo Wi-Fi compatible game.