Well, I finally got Omnipage installed.
Nuance customer support still sucks, but after messing around the web site for a half hour I called the main number at Nuance and finally got transferred to tech support.
The tech support call was a story in itself. The line was bad and the guy on the other end was in India. Cultural differences reared their head in that I had trouble figuring out the question he was really asking. But we got it to work.
Why do these companies think that just because someone is fluent in English they're equipped to handle tech support? The guy was fluent, fortunately, but we kept missing each other's cues and the result was a "Who's On First" scenario.
Oh well, at least I get to check out how well Omnipage works.