Hi, I bought a Westinghouse 19" (L1975NW) monitor recently, and its native resolution is 1440x900. I am using it with a RADEON X700 PCIe graphic card. I remember when I installed monitor on the computer first time, I could select the 1440x900 resolution but I selected and used 1280x768 resolution for some days. Now I checked the screen resolution, the 1440x900 resolution is not in the list. Does any body know WHY, and how to fix this problem? Thank you!