Thin Client technology seamlessly centralizes the processing for individual users on a network. A master server stores programs and data, and "serves" a full Windows desktop to each user. The user's PC (the "client") runs a simple program to display the desktop and communicate with the server. The advantages of this method are great:
Cost of desktop PC's is drastically reduced, since machines can be much less powerful. Even your old Pentium II's can provide adequate performance.
Administration and management of the system is centralized: programs and upgrades are installed only once, and are available to all designated users.
Users can "disconnect" from a session at work, and reconnect later from a remote location.
Managers or IT staff can "shadow" a user's session (remotely view the screen and type on the keyboard) to provide support from a central location.
Traveling staff can access their full desktop from anywhere in the world.