Gate
From Wild World Wiki
The Gate is located at the top of your town and is run bby Copper and Booker Here is where you connect for WFC and DS-DS connections.
WARNING!!!!
If you go on wi-fi NEVER EVER put a pitfall by your gate, when someone falls in the results in a game wrecking glitch that DELETES your gate and wrecks your gamecard. For screenshots and a small solution go here http://www.neoseeker.com/forums/index.php?fn=view_thread&t=632019