After trying the suggestions in Microsoft's article 815069 about improving game performance, I have been getting more and more corruption of my video displays. I have a 4 screen setup. A Radeon 9550 128 meg agp card handles screens 1 & 2, a Radeon 9200 256 meg pci card for screens 3 & 4. Random patterns began to appear in the pci displays, then lately showing up in the agp displays too. Also when I select any weather other than clear, buildings in the agp displays get jumbled up. Another issue is I'm also not seeing any fog in the pci dsplays, even though I altered the display.cfg file as per Microsoft's note about the Radeon 9200.Latest ATI driversLatest VIA driversSoyo P4VGA motherboard2.8 gig P4b512 meg DDR4007200 rpm IDE raid drivesXP sp2MS 2004 v9.1Any help appreciatedThanks, Don

Answering my own post. I uninstalled and reinstalled the ATI drivers and control panel. All the above problems went away, except for the fog problem. I'll continue to work on that.Happy flying to all