Things You'll Need
Instructions
Install your wireless router according to its instruction manual, in a place that will provide a wireless connection where you most often use your DSi. Most routers provide coverage within 50 to 100 yards.
Tap the "connection settings" tab on your DSi's main menu. Tap on one of the three buttons labeled "none" to set up a new connection.
Tap the AOSS icon if you selected a router with AOSS capabilities and push the AOSS button on your router. Your DSi should connect automatically and give you the option to test the connection.
Tap the "Search for an Access Point" button if you didn't select a router with AOSS capabilities. You'll be presented with a list of available wireless connections. If you're using a security-enabled router you'll be prompted to enter your password. Enter your password and the DSi will connect to the Internet and give you an option to test the connection.