I moved my house and subscribed to different Internet provider. Through Ethernet cable, I can connect to Internet. I'm setting up AirPort Express 802.11n (1st Generation). I had been using this one at previous home or at hotel with this PC without any problem. However, on this network at new home, I have problem. I reset to factory default. From Windows 7, AirPort Utility finds this AirPort Express (connected to cable modem by Ethernet). When I press "Manual Setup" or "Continue" on AirPort Utility, I get "Error -4" saying "An error occurred while trying to access the Apple wireless device. Make sure your network connection is valid and try again." So, I have no idea how to solve this issue, and wanted to get advise.