I have a Mac Mini running DNS, DHCP, Open Directory, Profile Manager. The Airport Extreme is using RADIUS/Enterprise. Problem I'm having is being able to get my MacBook Air to connect to the wireless network at the login screen so I can get a new user to login. If I try to enter credentials, it says no network server found. How can I setup (step by step) the ability to download a payload profile to have my MacBook Air connect to a enterprise wifi?