The info was copied/pasted from a MS KB article. I would assume that the writer was somewhat knowledgeable. As for PDC/BDC, the terms are used in reference to SBS in that the SBS server must be the DC that maintains the FSMO roles, and acts as the PDC Emulator (where appropriate). I installed SBS 2K3 "Enterprise" on my VM system and did not find any option to join an existing domain.
There is a process where you can halt the SBS install, join a domain, run DCPromo, then seize the FSMO roles and finally complete the SBS install, but SBS won't work (ie - no install of all the other components such as SQL, Exchange, Sharepoint unless the SBS server is the PDCe/FSMO role owner. This is how a "BDC" could help protect an SBS installation, but it's kludgy at best.
Glenn
_________________________
Actually I
am a Rocket Scientist!
