The next time you rebuild or repair a system, you just might need this Geek Tool of the Day.
The Wi-Fi Network Backup Manager will show you all saved Wi-Fi profiles on your current system and allow you to save one or more profiles to a local xml file.
Run the Wi-Fi Network Backup Manager on the new or repaired system and load the Wi-Fi Backup file. There is the entire Wi-Fi network list including passwords!
Thanks go to: Shai Raiten, Team System MVP.