I recently changed my wifi (apple airport extreme) configuration to allow my brothers xbox to be able to access xboxlive. I switched the security password to a WPA Personal from a WEP Key. Today when I heard about the Jirachi event I tried to connect but failed. I didn't play around with it for too long but when I tried to change the settings on my DS, I only had a WEP Key option. Is there a way to fix this on my DS or would I have to change the configuration back to my previous setup?
Unfortunately the DS only supports WEP. However, if you have a Mac connected via Ethernet to your Airport Extreme running WPA, you can share a WEP connection with your DS (I do this).