Yesterday I decided to put WPA2 Personal encryption on my Airport Extreme because I saw that other people were using it and wanted to prevent that. Well, as a result, I can no longer access my base station to change its settings. I opened up Airport Utility, Airport Admin Utility, and the Airport Setup Assistant, and none of them are able to scan and find my Airport. I think I literally locked it up by putting this encryption on it and making it on a closed network. Does anybody know how I can reset my Airport Extreme so that I can just start from scratch and not make a stupid mistake like this again? Note that I've tried holding in the "Reset button" on the back, but it doesn't work; it simply goes back to having a green light after 5 seconds.