If you are infected with this virus you should take emergency precautions because all your data is now exposed to attackers. Use another computer and browse to the official anti-DNS changer virus website called DCWG. There are several tools listed there that should be able to remove the virus.
Visit this page first to check if the virus is active and still running.
If you don't have access to a computer, it is recommended to format the C: drive then reinstall Windows followed by a fresh scanning of the other partitions. It is important not to access them after Windows has been reinstalled because if those are infected, it will reactivate the virus.