Standard VGA Driver Only On Vaio Laptop?

I just upgraded my Sony Vaio VGN-SZ491N laptop with an SSD and Windows 7 64-bit.Unfortunately, as I learned after going to Sony's website, Sony only offers driver support for XP and Vista. While I have been able to get most of the laptop's features up and running with updated drivers from other sources, the display driver is still stumping me.The display driver is self reporting as "Standard VGA Graphics Adapter." This standard driver won't fill up my screen (4:3 only - not the 16:9 the laptop requires) and is obviously missing all of the graphics acceleration that a proper driver would provide.It looks like I should be using the Intel 945 drivers, but I can't find Windows 7 64-bit (or 32-bit) versions of the drivers, and when I try to install the Vista versions, it says that I don't meet the minimum system requirements.Does anyone have any suggestions on how I can definitively find out what kind of graphics driver I should be looking for, and how to install it in such a way that the computer doesn't think that "Standard VGA Graphics Adapter" is the end-all-be-all of graphical computer and refuses to update?