opensuse 11.0 HP w2207h

In my computer I have a card RV280 5960. I used a Miro 17" screen. Some months ago I bought a HP screen w2207h. Under the suselinux 10.2. I used at that time with some difficulties I achieved acceptable results with the new screen. Recently I changed to 11.0. Now I do not find a configuration that results in acceptable results. The screen asks for 1680 X 1050 , 60 hz. Setting this parameters the screen identifies 1600 X 1025, the picture is shifted to the left and the proportions are inappropriate.

Is there any solution?