ASUS 7800GTX /IIYAMA B2403 Screen resolution issues

Hi folks,

I have bad issues with the resolution settings under W7. With a fresh install of W7 I can't move up to 1600X1200. the native resolution of my monitor is 1920X1200. I started to try some others drivers but without any success. I tried to use the NV panel wich offers me the correct resolution but when I click on the apply button nothing change or kick me out of range. The exact same thing using the possible settings from the adapter properties. The reason is that the refresh rate seemed to be lock @70hz which is too high for that resolution using VGA. Some of you may say to try with HDMI cable, but I don't want because I 'm also using an analog KVM. It reminds me a PB I had when I installed OSX on my PC, but we're talking about W7 here, and of course it's not the same exact problem. It seems to be a common problem with many of you. Any solution to fix it ?

Thanks,

The DVI cable seems to be the only fix at the moment.

Thanks for your answer.

I can't figure out that it won't work with analog output (or even digital. some users had this trouble). To me, 2 things are evident.
The first one is that the microsoft driver is capable of a max resolution 1600X1200 (So Another one is needed). I read from MStech that they won't give support upper 1600X1200.

The second one is that the refresh rate is locked @70hz when another driver is used with a resolution upper than 1440X.... But why ? That's the question.

I hope someone could answer me

Thank you !