[Samba] Upgrading from NT to AD

[James Chamberlain]

Hi Samba users,

Could someone point me toward documentation on the impact to Samba of  
upgrading from an NT domain to Active Directory?  I've found docs on  
Samba with NT domains and docs on Samba with AD, but not so much on  
the upgrade process.  I'd like to know exactly what I'm doing before I  
do anything that could cut my Windows users off from the file  
servers.  Whether it's as easy as "do the upgrade and your Samba  
servers will automatically make the transition", or I have to set up  
Kerberos and make changes to smb.conf, I want to be sure I know all  
the steps involved.

Thanks,

James