Help w/ monitor rotation

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I currently have a 3 monitor setup w/ 3 samsung 204B's hooked up through 2 dual DVI PCI express graphics cards. I want to get rid of 1 of the 20's and get a samsung 305t and rotate the remaining 204B's vertically. As far as I can tell, there is no option in windows properties or the graphics card software's properties that allow me to rotate the monitors. What do I need to accomplish this? Software/New Cards?

Thanks