Follow this guide for setting up IPinator SmartDNS on Windows XP.

Click on the “Start” button, then click “Control Panel”.

Start, Control Panel

Click on “Network and Internet Connections”. Click on “Network Connections”.

Network and Internet

Right-click the interface through which you are connected to the Internet and click “Properties”.

Interface, Properties

Click on “Internet Protocol (TCP/IP)” and then click the “Properties” button.

Internet Protocol (TCP/IP), Properties

Click on the “Use the following DNS server addresses” radio button. Enter your DNS Proxy IP address and click on the “OK” button.