Thanks again, Maz.
The problem isn't with the install itself, as far as I can tell. On opening, a Registration window pops up asking for information that isn't available. This doesn't seem like a Vista problem to me. The program runs fine, I toyed a bit with a couple pages, but when I preview them, there is a message across them because I haven't Registered, even though I activated and got a Successful Activation message.
It might be related to Vista, but I've seen progs that don't install or run correctly in Vista, and dealt with them as Admin; this isn't the problem with this one, as far as I can tell. I need a Code-key and a registered email address for it to work as intended.