mDNS (miniDNS) is made to do just two things.
1 > clear the DNS cache
2 > set the DNS config to Google

you can run the app as a native GUI (double-click the icon) and choose a button, or you can use it as a command line app
it accept the following command line options

clear
google

clear clears the cache
google sets the DNS to Google's DNS 

examples:

mdns.exe clear
mdns.exe google

And thats it.  Really. Simple :D

Made by Solo form solo-soft.com, for Chris (choke) simply because he asked him to do so.  Needs .Net to run, as how this is a .Net app, Windows only.