Hello Mr. Needham-
Thank you very much for your reply. Yes, I setup as you directed. By the way, I would like to thank you for all you have contributed to this hobby. I have followed your posts on a couple of different forums for quite awhile. It is obvious that you are very knowledgeable about computers and engineering and it is greatly appreciated. Also, Gex- nhanced is a wonderful addon.
As far as my situation goes, I may just be asking for too much clarity in the image I seek

I don't remember anything like this in FS9. My trees flicker to the point of truly ruining the experience. I usually run without autogen for that reason. I even ordered a hd3870 a few months ago hoping that would fix the problem but I still had shimmers and slower framerates too boot. One thing that is quite interesting in my case is that on the 8800 I don't really notice that much difference when clamping or allowing on the Lod. I wonder if something is not sticking?
JT