Windows NT represents Microsoft Corporations serious arrival into the Network Operating Service(NOS) environment. The name "Windows NT" stands for Microsoft Windows New Technology. Windows NT (NOS) is comprised of of three major categories or types of computer systems: servers, workstations, and clients. At the present time there are two basic types of Windows NT: Windows NT Server and Windows NT Workstation. Both systems are similar in there software, but NT Server provides provides more power and control over networked environments, while NT Workstation is most often used on workstations and clients, although it can act as a server for small networks.