display resolution of 1920 x 1200If you can get your graphics cards to those settings you should be okay. Unfortunately I can't help any further because (as I said) i don't have Vista.
And I know it won't help to say I went through something similar when I received a 1440x900 monitor to use with my Linux machine. But it works now... Good luck and maybe some Vista-savvy FReeper (GE?) can help you.
thanks for an intelligent reply!