If you are having network connectivity problems and believe it's TCP/IP associated and want to uninstall and reinstall TCP/IP, you can’t. You will see in local area connection properties that uninstall button is grayed out. In XP, the TCP/IP stack is think a core element of Windows and so not possible to uninstall.

You can though reinstall internet protocol stack to the method it was when Windows was first installed using Netshell utility.

Utilizing command with a particular switch will permit you to reset rewrite applicable registry keys that are utilized by TCP/IP to obtain similar result as reinstalling the protocol.

Use following command for this:

netsh int ip reset [logfile]

Where logfile is a name you offer to file that records the acts done by netsh.

E.g. netsh int ip reset iplog.txt
to make iplog.txt log file in current directory

OR

netsh int ip reset c:\iplog.txt
to make iplog.txt log file on C drive.

Be cautious when using these types of commands to prevent harm to your system and keep in mind to backup your registry first.

Another technique to reinstall TCP/IP is from properties of your network connection.

• Tick Start, and choose Control Panel.
• Tick on Network Connections.
• Right tick your network connection, and choose Properties.
• Tick Install button.
• Choose Protocol.
• Tick Add button.
• Tick Have Disk button.
• In the Copy Companies Files From text box, type c:\windows\inf
• Tick Ok.
• Choose Internet Protocol (TCP/IP).
• Tick Ok.
• Reboot PC.