Best Guide to Change DNS Servers On OS Windows .
Recommended before using VPN.
Open the Network & Sharing Center by either clicking on your network icon in the Notification Area and clicking Open Network and Sharing Center (Image 1), typing network in the start search box (Image 2) or through the Control Panel (Image 3).
Once Network & Sharing Center is open, in the left hand pane, click on Change adapter settings.
Right click your network adapter and choose Properties (if you get a UAC prompt, accept).
In the following window, under "This connection uses the following items", click Internet Protocol Version 4 (TCP/IPv4) and click Properties.
Under the General tab check the Use the following DNS server addresses radio button, and enter your preferred DNS server address, in the guide we'll be using Google's DNS server address which is 188.8.131.52 /184.108.40.206
Make sure that Validate settings upon exit is also checked and hit OK.
Windows Network Diagnostics will now attempt to detect any problems with the addresses you've specified, leave it to work and hopefully it'll report that troubleshooting couldn't identify the problem.
Close the troubleshooter and that's it done!
So, why change your DNS address?
"The DNS protocol is an important part of the web's infrastructure, serving as the Internet's phone book: every time you visit a website, your computer performs a DNS lookup. Complex pages often require multiple DNS lookups before they start loading, so your computer may be performing hundreds of lookups a day."
By using a faster DNS server, your browsing speeds can increase, security can be improved and you get the results you expect with absolutely no redirection.
Note: Recommended also you change "Location" and "Time zone" in your OS Windows. For example if you want to connect New York VPN, first change your Windows location (Control Panel\Clock, Language, and Region) to USA (New York) then connect the New York VPN.
Return to default
Returning to default is as easy as changing the DNS address. Repeat Step 1 � 4, in Step 5. Check the Obtain DNS server address automatically. Hit OK.
Changes are made straight away, either way, no need to reboot.Source: http://noodlevpn.com/announcements.php?id=14