Some of you may realize that with WIN XP you ALREADY have TTS available on your machine. It requires you activate your speakers and builtin mike if you have one. Go to control panel then Speech. Select and try. It takes some time half a minute sometimes for the speech to start.
I can post couplea help areas on MS website or U can search their database for SSR or Speech Recognition or Voice Commands. Now you can use your voice to OPEN etc etc and run much of your machine. And read you your e mails.