I bought this Text-to-speech software a while ago and never use it. It works with windows and it is a very good voice with good pronunciation. You can check it out here at http://expressivo.com/
It is the Jennifer voice. It works with Windows. I have a mac and though I use VMware to run windows I never boot into it to use it. It is a perfect software if you want to create audio books from your scanned in books. I do it all the time with the Mac OS X default Text-To-Speech voice. Let me know if you are interested. I am selling it for $25. The software is normally $50.