Hopefully the answer isn't obvious and I haven't just been missing it while reading Xtreme, but:
What does a character who wants to start as a Virtual Persona (not an AI) in a Robot do at character creation? The Robot chargen steps imply that you've already done the mental creation steps, saying that they'll have already picked their profession and mental stats, plus adolescent skill ranks, but I only see the 'Creating AI Characters' (p.86) section, which seems to have a lot of rules that wouldn't relate to Virtual Personas.
I don't see where I'd build a character that's already become a Virtual Persona at the start of the game.