and go to the forum section. Then download the 77.62 driver and updated .inf file (in the signature of the guy in the main topic). Unpack the 77.62.exe file into a directory and then extract the .inf file into the same directory. Then to update the drivers in windows, goto the display properties -> driver -> update driver, then select I will choose a driver to install. Click on HAVE DISK and point the system to the directory where you extracted all the files.
This will update your video drivers to forceware 77.62 which is the latest drivers. You should notice a slight increase in speed and stability.
If you also then do a search in google for coolbits.reg, you can get the system to overclock the video card to the correct speed. Sony seems to underclock the 6200go card by around 3x. Just install the registry file, then goto the nvidia properties. You should notice that there is a overclocking tab and you can tell the system that you want to update the card for 3D apps. The driver will then automatically detect the best speed for your card. Doing this pushed my 3D mark 2003 scores from 2587 to 3481 on my FS series notebook. I have not noticed any instability on the system either. Obviously you should do this at your own risk, but many users seem to have no problems from doing this.