I recently got a Latitude D600.  I downloaded and installed the Radeon 9000 drivers listed on Dell's site.  However, I can't get my screen resolution to be greater than 1024x768.  When I got to the Video Settings, in the "Display" dropdown two monitors are listed.  When I select and activate the second monitor (without a second monitor actually being plugged in) I can set it to be greater than 1024x768.  However the primary screen will will not.

Any help in resolving this problem is greatly appreicated

-Gary