Forget wifi network password key that stored on your Windows computer. Try use Wireless Key View, a small WiFi WEP / WPA key recovery tools that able to recover all wireless network keys/passwords (WEP/WPA) stored in your computer.
However, Wireless Key view can recover all wireless network key password only which you had ever connected using the ‘Wireless Zero Configuration’ service of Windows XP and ‘WLAN AutoConfig’ service of Windows Vista. Beside that, It allows you to easily save all keys to text/html/xml file, or copy a single key to the clipboard. Plus more, Wireless Key view can run as portable program.