Ive written a new GenieTexter script called Txt2Speech, it doesnt actually send a message to anyone at present. It just sends the message to a text to speech converter and plays the sound back.
The text to speech converter is at http://www.research.att.com/projects/tts/demo.html The voices are quite good quality, and some of the "foreign" ones are quite funny :)
Anyway theres an interesting discussion about my new script in the GenieTexter forum here