To update drivers i would first recomend createing a system restore point
To do this got to Start / All Programs / Accsessories / System Tools / System Restore
Then select create a restore point
Hit Next then type a description like "Just in Case"
Then click create, it will then say its been created and just click close
Now for updateing driver
Go to start then
RightClick on My Computer and select properties
Then a little window should appear
From the Tabs at the top select hardware and then device manager
Now an even bigger window will appear with lots of expandable options
Look for
Display AdaptersYour graphics card name should then come up
Double click on it and yet another window will apear
From the Tabs at the top of this window select Driver
Then select
Update DriverFor the connect to windows update screen that will come up i recomend selecting no or yes this once as it will unlikley find one there
Then click next and select install automatically and next again
It will now search the web for a driver if there is a later version for your graphics card
If there is one it will download and install for you and tell you to restart your pc
(if this has caused more problems use system restore to go back to the point we made)
If there isnt one it will just say keep this driver
Hope all this helps!!
-SpuD-