So the gist I get is that there is no portable way to do it in Windows? Seems CHOICE.COM doesn't come with Windows so not everyone will have it, and SET /p wasn't added until 2K/XP. Is that right?

I think when I wrote my batch file a while back, I came to the conclusion that "yes, that is right" and I used the "portable" (read: hackish) method of using DEL /p. I can't imagine that's the problem with the people whose config.inis aren't being updated, though. I'd like to know what is...