Larry, I know you are looking in to our being able to use other synthesizers on the book port. But, one thing just occurred to me. I do note that the double talk mispronounces a few more words than other synthesizers I have used. Is there any possibility of having a pronunciation dictionary like screen readers use where users can change the way particular words are pronounced by double talk? This might increase people's willingness to keep the double talk, especially if the other synthesizers will add an additional cost to the unit. Neal