In this paper I've tackled the problem of administrating a large number of computers that are connected to a local network using a server running an instance of Windows Server operating system. First, we need to install the operating system on the physical server itself, which is a pretty straightforward process with a graphical user interface. The next step would be to configure some basic settings and then we can start configuring server roles. Our main focus will be on the Active Directory Domain Services role since we also have the administration of user accounts on our hands. Setting up a domain system will make our administrative tasks a lot easier, since we can administer everything from a central location (the server). To set up a domain system, we need to configure the Active Directory Domain Services role first. Configuring the role itself is simple, we just have to follow the setup wizard steps and if we do everything correctly there shouldn't be any major issues. After that we need to promote the server to a Domain controller. We'll also have a setup wizard guiding us through that. The main step here is to actually give a name to the domain. Now that we have setup a domain system we need to add a client computer to the system. But before doing that we need to make sure that the server and the client are connected to the same local network and that they are able to communicate between each other. When we add the client computer to the domain we'll be able to login to our domain account that we previously created in the Active Directory. When we enter our login credentials the server authenticates the user and if the client and the server can communicate and the credentials are correct, a domain profile is created on the client computer during our first login. The group policy rules, such as mapping of a shared directory or a default desktop wallpaper are applied during our first login as well. The domain system itself is making our task of administrating a large number of computers much easier, because we now have the ability to mange the computers and the user accounts from a central location (the server). We are now able to configure the basic settings on the local clients and configure access rights for different users as well.