Well shoot. I guess I'm screwed. Collections Manager doesn't show the Collections -- it clearly knows that books are IN collections, because it shows numbers in parentheses for those books that were already in one or more collections. But it doesn't show the actual collections.
Guess I'll read the CM thread to figure out how to use it, it doesn't look terribly intuitive offhand but I'm sure it's easier than it seems.
Thanks for answering, NiLuJe! I used your screensaver and fonts hacks going back several Kindles ago but hadn't kept up on the last couple of Kindles I've had. The Kindle world is far better with folks like you, ixtab, and the others I've seen mentioned as I've been meandering around in the various hacks threads, so thanks to you all!!