How to change NT workstation to NT server?

Windows NT 4.0 was the fourth release of Microsoft's Windows NT or "New Technology" line of operating systems, which was started with Windows NT 3.1 in 1993. NT 4.0 was released to manufacturing on July 29, 1996. It is a 32-bit Windows system available in both workstation and server editions with a graphical environment similar to that of Windows 95.