DVI resolution trouble on FX5200

[21_cz]

I've got a trouble with my new LCD panel Fujitsu-Siemens S20-1W. When I connect it to my graphic card MSI nvidia Geforce FX5200 - td128 via DVI port, the panel can't run in resolution 1680x1050, that is its native resolution. I can get only 1440x900. But when I connect the panel via analog D-SUB port, panel work in proper max resolution. I am really upset about it, because I want to use the analog connection for my CRT monitor. OS win XP, latest nvidia and lcd panel drivers... Is there any chance to run it properly or I will have to buy newer graphic card?

Please help. I tend to start a chainsaw massacre...

 

[dokk]

Dumb question here.
Does your card support that resolution??

 

[21_cz]

It should support that resolution, when it is possible via D-SUB, shouldn't it? Or is there a difference between DSUB and DVI resolutions on the same card?