Nintendo Wi-Fi Connection Problem!!!

I have one problem that irritates me to no end. I can never connect to Wi-Fi with my ROMs!!! I'm right at the router, and it scans, but then it fails (this is at my friends house), and my house, when it scans my BigPond Wireless Gateway, it says "Security Settings don't match the Nintendo DS". How can I change this....

what wireless encryption are you using?

if your router doenst support b it wont work.

Wha? Wireless encryption?

Here you go, i think this wil help you more then me :Dhttp://www.nintendo.com/consumer/wfc/en_na/ds/index.jsp