TCP/IP is automatically installed with Windows, but you can add other protocols, services, or clients. You don't need to install any of these unless you've purchased a specific product or you work in a network environment that requires it. When you install a protocol, service, or client, it is installed for all of your connections.
Open Network Connections by clicking the Start button , clicking Control Panel, clicking Network and Internet, clicking Network and Sharing Center, and then clicking Manage network connections.
Right-click a local area connection, and then click Properties.
If you are prompted for an administrator password or confirmation, type the password or provide confirmation.
In the Select Network Feature Type dialog box, do one of the following:
To install a client, click Client, and then click Add.
To install a service, click Service, and then click Add.
To install a protocol, click Protocol, and then click Add.
In the dialog box that appears, select the item that you want to add, and then click OK.
If you don't want a protocol, service, or client installed for a certain connection, right-click that connection, click Properties, click either the Configure or Networking tab, and then clear the check box next to the appropriate name.