[turba] add entry from script

[Biermann-Roemke at t-online.de]

Hello!
Im using turba Version 1.0 and I have one Adressbook which is
public. This is stored in a mysql-db. 
I would like to add an entry every time when adding a new 
user to my system by a script. So it would be very nice,
if I could call a php Script to add the addressbook entry.
I tried to understand the php source, but it's to difficult
to me cause I use php not often. 
Has anybody done this script or could explain me how the
object_id is calculated?
Thanks
         Karsten