I'm sure that some of you have noted that if you try to run an nVidia card at AA 8xS, you get a black screen from the top of the AdvDisp box to the bottom of your screen. One solution is to run at AA 4x.Another solution I have found is to move the AdvDisp undocked box to a second monitor. You can then run FS9 at AA 8xS. So far, I have not found any problems doing this on my system and I really like the way "spot plane," for example, looks at AA 8xS.

So, yours doesn't do this at 4x AA? Seems like I tried that and it does it at any setting.

No, mine does the AdvDisp black screen effect at AA 8xs at 1600x1200 resolution. It also does it on the FS9 kneepad view (F10), and also the "create a flight" aircraft display box is black (it can be refreshed by pressing the ctrl key). At AA 4x everything looks ok.