Wireless WEP Key Password Spy is a free of charge application developed to recover all WEP keys and wireless network passwords that have been stored on your computer. From what it seems, its developer doesn't support it anymore and there isn't any official source to download it. However, you can use Google search engine to find and download the software. Also, I suggest you uninstall the program (Control Panel > Uninstall a program) before installing the new package.
