Writing new registrations to ext. DB

[JPnyc]

Hi folks, I need a clue here. Need to create a plug in which will write new registration data into an external database in addition to the my SQL database connected to VB, in real time. I imagine it needs to be hooked on register_addmember_process (_complete?), but I'm not exactly sure how to reference the user data at that point. I don't know what data managers are in play.

Would it be (for example) $bbuserinfo['username'], $bbuserinfo['email'], etc?

Thanks in advance for any hints :)