Well......... it has been a bit and the ATI 9600 Pro seems to be pretty nice. All has been working well so far....no unexpected glitches. I get pretty good frame rates now........ and what a difference it makes in the flying.
An interesting thing that came up in this search is that the "demo" programs that the Asylum GeForce folks gave me to use to "test" if the issue I was having was with their cards or was the other factors I had discussed WILL NOT RUN ON THE ATI card at all.
Before I deleted them along with the now unused NVidia drivers I tried them just to see what the results would be. The ATI will not even alow the LOAD of the programs..... I get error messages saying about 8 - 15 necessary display functions are missing ...depending on the demo.
Apparently their deom programs are SO card specific to routines that ONLY their hardware and software support.... that you can't run them on others hardware. NOT exactly my idea of a "fair test" to base decisions about compatibility upon. Sort of stacking the deck.

best,
.....................john

Intel i7 960 quad 3.2G LGA 1366, Asus P6X58D Premium, 750W Corsair, 6 gig 1600 DDR3, Spinpoint 1TB 720