DSi can connect to WPA Connection but not through Mario Kart?

Alright, so I can connect to my WPA network through my DSi but when I play some games, it doesn't seem to be able to connect to it - it only allows WEP networks. For example, I load up Mario Kart and go to the Wi-Fi settings, there is no way I can get to the Advanced Setup section which is how I connect to a WPA connected. Also, if there is no way, how do I change our security key from WPA to WEP? I know it is unreliable but I've been inside our Router and there is no option to change it unlike our old one. Thanks in Advance!DSi can connect to WPA Connection but not through Mario Kart?
Well if you can't enable WEP in your router then that basically leaves you with the choice of disabling WPA security altogether, at least temporarily while gaming. You can however stay secure by disabling WPA and then ENABLING MAC address filtering. Just enter the MAC addresses of your DSi and all of your PC's into the filter setting then enable it. That way your router will only talk to those devices, period. And you will not have to enter a WPA key.



P.S. Enter the MAC address of your PC's wifi adapter first before you actually enable the filter or else you will essentially be locking yourself out of your router.



And to get your mac address, go to Start/Run and type CMD then press enter. Once the Command prompt box appears type IPCONFIG /ALL then press enter. It will display all of the network adapter settings on your PC, look for your wifi adapter and write down the physical/mac address. It will look something like 00:12:EF:00......and so on.