Thaks for your clear answers, guys.
Iardman : i have a 750, and the image availiable via the web browser is called xxx-non-working-xxx or something like that... But maybe it only means it is not _fully_ usable. Any way, i won't test it until an official image is released as i really need my Z to be functionnal for my studies.
Unless someone tell me it works fine and has a good word processing tool...