functions as in the Fn key on my laptop to adjust screen brightness/volume/other things. I just installed Windows 7 Ultimate 64bit on my Sony Vaio VGN CS-290. I originally was running Vista Home Premium 64bit without issues. I did a quick forum search but didn't find anything on it, so I was wondering if this has been covered already or if anyone knows what the issue is and/or how to resolve it. Thanks in advance.