The® DS( ) is an 802.11b device. In order to connect your ® DS to a DIR series, Draft N, router, you will need to confirm that the router is in Mixed Mode.
Step 1: Open a web browser and type the IP address of the DIR series router into the address bar (default is http://192.168.0.1).
Step 2: The default username is admin (all lower case) and the default password is blank (nothing). Click OK.
Step 3: Under Setup, click Wireless Settings on the left hand side.
Step 4: From the 802.11 Mode drop down menu, select Mixed 802.11ng, 802.11g and 802.11b.
Step 5: Click on Save Settings to save your settings.
Note: The Nintendo® DS does not support any version of WPA.