I found this place when i was searching a solution for my sony vaio pcg-k76p Fn keys problem. Looks like a good place and full of people who helps each other. ))
not: I learned that the user "vagon" found the solution but the link he gave unfortunately dead. "http://www.djvagon.co.uk/sonyhotkeyutility.html" So i'm still on search for it.
Kind Regards
axkaan