Need driver for Sony GDM-20E21 (SGI model)

Read somewhere that the... well, I forget the numbers (20E2T?), but it's a driver that IS available from Sony's site will work. But I have 2 probs: When I run games, the screen magically creates black margins on the left and right sides; and there are 2 very fine, horizontal lines that split the screen into thirds. The fine lines are practically unnoticable- but I bought this monitor refurbished so I wonder if it might be a bigger problem. Any help/ suggestions would really be appreciated. Respond to: TheMTNman@mailandnews.com Many thanks!