wireless networking - How to get a stored WLAN "password" from Windows 7?

I'm trying to connect to my friends wireless network, but we don't know the password (ie. network/WEP/WPA key). The WLAN is secured by WPA2.

My friend's laptop with Windows 7 connects automatically to the WLAN. Is there a way to get the password from his laptop?

Answer

WirelessKeyView from Nirsoft should do the trick.

However, AVG (antivirus) flags it up as spyware/adware. Not sure if it is or not but just thought you may like to know...