Public DNS Server Tool is a small utility for changing the DNS servers in Windows XP, Vista and 7 on the fly. You can use this tool to either set the DNS servers manually, or you can choose a preset pair of public DNS servers.

Setting public DNS servers
1. Download Public DNS Server Tool to your computer.
2. Unzip it to any folder you want on your hard disk.
3. Run Public DNS Server Tool by double-clicking on public_dns_tool.exe.
Since this tool makes chanegs to your DNS server settings, it requires administrator privileges. If you are running Windows XP, then you should be logged in as an administrator. If you are running Windows Vista or Windows 7, then you will be asked to provide administrator login.
4.Choose your Network Interface Card (NIC) from the dropdown list. If you have only one NIC, then it will be pre-selected.

5. Choose a set of public DNS servers from the drop down list as shown.
6. Finally, click on the lower Change button as shown.
7. If even after changing the DNS servers, you see your browser using previous DNS servers, then close and restart your browser again.

Manually typing DNS servers
1. Choose your Network Interface Card (NIC) from the dropdown list.
2. Type in the DNS servers in the textbox labeled Current DNS servers. Be careful to type correctly. You can type upto four DNS server IP addresses separated by commas.
3. Finally, click on the upper Change button as shown.
Please note that DNS server settings are changed only for the selected network interface card. If you have more than one network interface cards, then you should choose the one you use to connect to the internet.
If even after changing the DNS servers, you see your browser using previous DNS servers, then close and restart your browser again.

Please Note: this is software is fully portable, installation is not required.

The license of this software is Freeware, you can free download and free use this ip utility software.