As I told about DNS and OpenDNS in thread Increase your Internet speed with OpenDNS-Windows 7 and you can refer it HERE
Now will tell How to increase your internet speed using OpenDNS in Windows XP users:
1.Goto Control Panel->Network Connections
2.Right click on the Connect Internet and select Properties
3.In the properties, now navigate to Networking Tab
4.Now on Networking tab select Internet Protocol(TCP/IP) and click on Properties
5.In General tab in check the Use the following DNS server address
Preferred DNS server: 208.067.222.222
Alternative DNS server: 208.064.220.220
and click Ok.
Check whether you are connected to OpenDNS.
Click HERE to check it.
Now will tell How to increase your internet speed using OpenDNS in Windows XP users:
1.Goto Control Panel->Network Connections
2.Right click on the Connect Internet and select Properties
3.In the properties, now navigate to Networking Tab
4.Now on Networking tab select Internet Protocol(TCP/IP) and click on Properties
5.In General tab in check the Use the following DNS server address
Preferred DNS server: 208.067.222.222
Alternative DNS server: 208.064.220.220
and click Ok.
Check whether you are connected to OpenDNS.
Click HERE to check it.