HT3500: OS X: Connecting a Wi-Fi printer to your Wi-Fi networkLearn about OS X: Connecting a Wi-Fi printer to your Wi-Fi network
Currently Being ModeratedJan 21, 2013 11:43 PM (in response to DMulk)
The WEP key is a type of password to 'secure' your WiFi network (however it is very easily hacked and should be changed to WPA). You should have set this up when you setup your AirPort. If possible change the security type to WPA Personal.
Currently Being ModeratedJan 22, 2013 5:49 AM (in response to DMulk)
Do you mean your "equivalent network password?"
Use AirPort Utility and select your AirPort Extreme. Select "Manual Setup".
From the menu bar at the top of the screen (not the AirPort Utility window), select the Base Station menu, then "Equivalent Network Password..."