You told me Microsoft Security Essentials would work with the installation of KDFW and not block anything. So I uninstalled Norton and installed Microsoft. It made no difference.
As I've already said, THIS is not a problem of the Antivirus!!! If it's something related to the antivirus, NOTHING will show up, you will not see the Addon Manager and/or the Couatl menus, and the only thing visible would be the jetways.
Since you said you see all the scenery, but have a visual problem on the runways, you can forget about any antivirus issues.
That thread on the installation went on and on after I did that.
Not really, after the antivirus discussion, your last message said that you finally saw the scenery so, the problem was fixed, exactly as I suggested, by switching to a different antivirus program.
The only addon scenery I have is FSDT KJFK and KORD. Should they be uninstalled?
Surely not.
Where do I make the change on nVidia card. I can find no place in Device Manager, Video Display, 285X GT, Properties?
Not in the Windows Device Manager, you should have an nVidia control panel that appears when you right-click on your Desktop.