Text to Speech

[puCK at supereva.it_]

Hi all.. I've to interact via python with 3d modeling application [maybe Blender3D].
I've to create an avatar who reads a text file and react speaking it [with a text-2-speech engine I presume] and moving its lips, eyes etc etc

I'm a phyton newbie... and I do not know how to start... anyone knowing where to find a text2speech library or some documented algorithms for 
converting a text files in phonems and to pass phonems to my avatar?

Thank you very much,
puCK