For a while our entire company has been in a single location. We have two Windows 2003 domain controllers and about 30 computers running either XP or Windows 7. We've recently moved 4 of those computers across town to an office about 1/4 of a mile away. Both sites have a high speed internet connections and are connected via VPN. We feel that the speed of the connection through the VPN is fine. The computers at the remote site can ping the DC and can UNC into it via\\serveraneme\sharename and can copy and move files back and forth. It works great from that standpoint.
But they can't log in to the domain with their regular usernames and passwords. When they connect to the DC via\\servername\sharename they are prompted for credentials the first time they connect. They enter them and then after that they have access to the share without any more credential requests until they reboot.
But I want them to log on to the domain when they start their computers just like they did when they were at the main location. At the remote location they are in a different subnet. I've read that in order to do what I want to do I have to go into AD Sites and Services and create a new site. Our existing site is FIRST DEFAULT SITE so I would have to create a second site called DOWNTOWN. Then I would have to create a subnet object, the subnet of our existing site, and associate it with FIRST DEFAULT SITE. Then I would have to create a second subnet object and associate it the the DOWNTOWN site. Then I would need to put another DC in the DOWNTOWN site and then create a SITE LINK object to connect the two sites.
Do I really have to go through all this? It's only four computers. The budget really isn't there to put a DC downtown. We could do it if we had to but I'd rather not.
Any advise would be greatly appreciated regarding an easier way and regarding whether or not I have the procedure correct. Thanks.