Further testing yields these clarifications:
Putting the CSF file in a folder in the root of C seems to work well for Photoshop, Illustrator and InDesign. They are happy to have it there and work well in the Default account, and in user profiles that are replicated from there.
Acrobat still displays "Custom" in the list of drop downs for CSF files in Color Setup. The settings look to be configured properly, but the name of the CSF file is not shown, which makes us nervous.
Bridge does not like this at all. Previously I had seen it show the CSF file in the list if all the other apps had that CSF file specified, but I cannot recreate that condition. Currently is says that the suite is not synchronized, and it wants to apply one of the standard CSF files supplied with the suite.
Please help! This should be easy!
Post this question in the Photoshop Windows forum. (This is the Mac forum.) You'll likely get the answer over there.
Whoa! Whoops! Sorry guys. Will do!
Actually, this is the Color Management forum. I lost track of where I was. (I thought I was in the Ps Mac forum.) My bad.
Anyway, hang around here. There are a number of Windows folks who frequent this forum. Lou Dina is pretty good at Windows stuff. (Lou??...)