Cannot access Wireless

On Live the wireless worked, but after installing it doesn’t want to work. Even, if I write the password, the “OK” button won’t open. It says insufficient privileges. How do I add privileges to my user name? (Wired connect without a problem.)

This is what I get; Error adding connection: Insufficient privileges.

calculate chanath # groups
root bin daemon sys adm disk wheel floppy dialout tape video

I think, I should add wifi to this group. How do I do that?