Will my graphics card support this?

I received a Dell 20 inch monitor for Christmas. It's native resolution 
is 1680x1050. Looking at my Xorg.0.log file, I find these lines:

(II) NVIDIA(0): Not using default mode "1680x1050" (hsync out of range)
(II) NVIDIA(0): Not using default mode "1680x1050" (hsync out of range)
(II) NVIDIA(0): Not using default mode "1680x1050" (hsync out of range)
(II) NVIDIA(0): Not using default mode "1680x1050" (hsync out of range)
(II) NVIDIA(1): Not using default mode "1680x1050" (hsync out of range)
(II) NVIDIA(1): Not using default mode "1680x1050" (hsync out of range)
(II) NVIDIA(1): Not using default mode "1680x1050" (hsync out of range)
(II) NVIDIA(1): Not using default mode "1680x1050" (hsync out of range)

Do these lines mean my video card will not support this resolution or 
that I need to do some configuration to get the card to support this 
resolution or something else entirely?

Thanks!

Andrew Robinson