Active Directory – multiple sites – 1 DC

We are moving from Win NT to Win Server 2003 with Active Directory. We have 8 remote physical locations or sites (about 10 users per location). The IT Manager wants 1 domain controller at corporate and no servers/domain controllers at the sites. We connect to the sites via PVC(s). My assumption is to set up 1 domain, no subdomains, and 7 sites. Is this scenario possible in Active Directory? My thought is yes. Any thoughts, instructions, or places on the net to look. I have not found any solutions nor sceanrios on Technet nor Tech Republic. I would love to see a scenario with steps on how this was accomplished.