I'm trying to set up my Airport Express on Windows 7. I ran the Airport Utility program and configured it to join my existing wireless network (which uses WPA2-Personal). Everything seemed to run fine but then it said that it was unable to connect to my wireless network. At this point, I cannot connect to the Airport Express (clicking Rescan doesn't find it) and now I can't connect to my actual wireless network either! Someone please help, something not installing is one thing but disabling my ability to do what I could previously do is unacceptable.