Instructions
Launch your router's system configuration tool. This is done by inputting the router's IP address into your web browser's location box. A list of IP addresses for common router brands can be found on TechSpot.com.
Log into the router's configuration tool using your administrative login and password. If you haven't configured the login and password yet, routers have a default login and password -- commonly "admin/admin" or "netman" with no password. Check your router's manual for the default login.
Check the "DHCP Clients" list. On some routers this is typically found in the "Status" sub-menu, while on others it will be its own menu selection on the main screen of the router configuration tool. Check your router's manual for specifics.
Check the "DHCP Clients" list. On some routers this is typically found in the "Status" sub-menu, while on others it will be its own menu selection on the main screen of the router configuration tool. Check your router's manual for specifics.
Find the Nintendo DSi on the list of clients currently connected to the network. The default client host name of the Nintendo DSi is "NintendoDS" -- if you have renamed the DSi's host name to something else, that name will appear here instead. The DSi's IP address will be listed next to the host name.