To install IPv6 on your Windows XP computer, follow these steps:

Click Start, click All Programs, click Accessories, and then click Command Prompt.

At the command prompt, type netsh int ipv6 install and press the Enter key on your keyboard.

Close the Command Prompt window.

To uninstall IPv6 on your Windows XP computer, follow these steps:

Click Start, click All Programs, click Accessories, and then click Command Prompt.

At the command prompt, type: netsh int ipv6 uninstall and press the Enter key on your keyboard.

Close the Command Prompt window and restart the computer.

or

Install IPV6 from Network Connections

1. Open Network Connections

2. Right-click any local area connection, and then click Properties.

3. Click Install.

4. In the Select Network Component Type dialog box, click Protocol, and then click Add.

5. In Select Network Protocol dialog, click Microsoft TCP/IP version 6, and then click OK.

6. Click Close to save changes to your network connection.