samba - Mar 2009 - Add a Samba-3 server to a Samba-2 Domain

Hi,

I have some issue to configure a samba server. I'm not an expert with 
Samba and I prefer asking how to do it then doing some terrible mistake. 
In my current infrastructure I have a samba-2 server running as a PDC. 
This server handle authentification using LDAP.

I need to add a new server to this infrastructure. I select samba-3 to 
be the new server and know I want to add this server as member of the 
existing domain. The goal is to have both samba server using the same 
authentification sheme.


My first question whould be, is it hard to achieved this manipulation ?


Thanks

Patrik Dufresne