TCP/IP - This suite of networking protocols provides communication across interconnected networks. Choose this option if your computer is on an interconnected network with diverse hardware and operating systems, or if you want to communicate with non-Microsoft systems such as UNIX. TCP/IP is required for Internet communications.

NWLink IPX/SPX Compatible Transport - For many sites, this is the standard network protocol. It supports routing, and it can support NetWare client-server applications, where NetWare-aware, Sockets-based applications communicate with IPX/SPX Sockets-based applications. Choose this option if your computer is connected to or communicates with a NetWare network.

NetBEUI - This protocol is usually used in small, department-size, local area networks of 1 to 200 clients. It can use Token Ring source routing as its only method of routing. Choose this option if your network uses NetBEUI as a transport protocol. NetBEUI is selected automatically if you install Remote Access Service and do not configure a network adapter card.

Caution: You must select NetBEUI if your computer communicates with other computers on an existing Microsoft network that uses NetBEUI for Windows NT 3.1 or later, Windows for Workgroups 3.11, or LAN Manager 2.x. If you do not install NetBEUI and your network requires it, your computer will not be able to communicate with other computers on your network.

If you are unsure about which network protocol to choose, accept the default or ask your network administrator. After Setup is complete, you can add or remove any transports for your system by double-clicking the Network icon in Control Panel.