Idk, every DS game I've tried to connect to the internet thus far is unable to go through my WPA connection, thus I always have to switch it to a WEP for the time being. Part of this reasoning I believe is that when you go to the internet connections on the DSi, it gives you 3 basic connections. And those first 3 are what are used for games and it seems like they never support WPA. You'd have to go to the advanced connections which are 4-6 to connect a WPA. While it allows you to browse the internet and such, you can't connect with games.