I've been operating my FS9 on twin Nividia 6800 video cards; however one of them has packed it in and I had to replace them. At the suggestion of a computer knowedgable person I replaced them with one card; an ATI Radeon 4800. The result has been less than satisfactory. With Anti-ailiasing turned on with my old cards I had no distortion [shimmering textures], however, with the new card "shimmering textures" are very prevalent on buildings and objects at a distance. Is there card out there that works well for FS9, or is there a solution to this problem that I'm unaware of.