Thank you so much for replying,
forpositiononly and
massman.
Photos on my monitor seemed to look as expected after the switch & calibration, but I feel MUCH better now with some knowledgeable confirmation.
Now I'm mired in getting Nik Collection into CS5. The very bad news is that - except for Viveza2 - it looks like Nik doesn't support 64-bit systems yet. Aaaack! Just sent a detailed letter to their tech support...
Oh, and all's fine, massman, for I saw your old and then new post during my same visit here.
big thanks

Ann