I can tell you by experience that the MSI NX7600GT-T2D256EZ can easily support 2 monitors, which is my current set up, set at 1280x768 on two 19" screens. I assume that you should be able to run them at 1600x1200 if your screen is big enough, I can also look into it later on and send you a reply to notify you.
Alright, I looked it up on my 19" display and the max resolution would be 1920x1440 so dual DVI 1600x1200 is possible with 19" 100% sure, I can not guarantee that it will work with 17" as I can't test it.
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