Sony Vaio Notebook and Vista --- FN key not working

[integramodder]

When I try to upgrade to Vista, none of the drivers install the necessary files to get them FN key to work. Without it I cant adjust the LCD brightness. Anyone experiences this or have any suggestions?

The laptop is a Sony Vaio VGN-SZ1XP/C.

 

[Roguestar]

Try installing the Vaio Utilities program. The XP one might work.