Installed and activated fine on XP Pro SP3. But when I tried to run it, the screen wobbled and flashed, and wouldn't accept mouse input. This is probably old-hat to some, but I was most gratified to find that right-clicking on the shortcut I'd created, going to Properties tab, and checking the box for "run in 640 x 480 resolution" (or somesuch) seems to have fixed the problems. I went to and from a couple of other games to test it, and all seems well now.
So yay! I now have a version of this game with a Relaxed mode! Thanks, all!