Disable XP Firewall

To turn off the Windows XP firewall, do the following:

Click on the Start button, choose All Programs, then choose Connect To and then Show all connections.
Right-click on the icon for your Internet connection and choose Properties from the pop-up window.
In the window that appears, click on the Advanced tab and uncheck Protect my computer and network by limiting or preventing access to this computer from the Internet.
Click the OK button. You have now turned off the firewall.