Just installed Windows 7 RC1 build 7100 and previous to that I was using Beta build 7000.
Under the beta version, I ran NVidia Windows 7 beta driver 181.71 and the beta gxm and was able to get 5040x1050 without a problem.
There is a new NVidia beta driver 185.81 so I thought I would install it with RC1 and beta gxm. Unfortunately I couldn't get the wizard to set res at 5040x1050.
I rolled back to 181.71 and re-ran the wizard and I was able to setup 5040x1050 res again np.
I would recommend sticking with 181.71 and beta gxm on Windows 7 versions atm. Anyone else have any luck?
This is also an issue with Windows 7 RC1 client, I know the point release is slightly different, but it seems similiar, and I have gt200 series cards and 64 bit as well. Stick with an earlier working driver for now I would think.