by David Perry.
We have google apps directory sync running on a server - we have 4 or 5 domain names, due to different campuses/divisions, and the app sets up the staff automatically with google accounts based on our AD tree. I think we just say 'create an account for everyone who's in the ou=Staff,ou=ourdomain,ou=local part of the tree, and the sub-ous in it' - and it does the rest. Assuming you've authorised all the domain names in the email addresses anyway.