In that field i cant help, f16falcon...
Now with my new screen my native resolution is 1920x1080 and i have the same problem as you. Looking for a solution too...
I find this topic:
http://www.subsim.com/radioroom/showthread.php?t=197589
But my problem isnt run the game in my native resolution...its about the image on the screen looks strange to me...looks like stretched. For exemple...a round object looks oval on the screen when playing Silent Hunter III its this i want to correct.