I have had some good success with it, I just make sure that I use NT Backup and get a good backup of the AD. Then I do a restore, with the RAO, followed up with a non-authoratative restore with AD.
This seems to work. This is on a 2000 DC. 2003 DC's you should be fine to just run BESR and do a RAO restore.
Thanks,
Technonerd