In our institute we would like to setup a system for the student. All the PC's are Win7 and we would like to achieve that the user don't have to sit always in the front of the same computer, but I it will be annoying to create user names on all PC. What server do we need(Windows 200x, Linux) to store the user data, and authentication parameters? How can we setup the PC?
For centralized authentication and authorization, you need to set up some type of authentication domain. In Windows you would create an Active Directory domain. Once you've created the AD domain you would then join the computers to the domain.