Open up the Apple TV and go to the Settings > General > Network
Then go ahead and select Wi-Fi for wireless network or Ethernet if you are using a wired connection. If you have not already setup a Wi-Fi connection you will have to choose your network and input your password for the Wi-Fi again if needed.
Select Configure DNS and select Manual
Enter Login to see and click Done
On the Network screen please verify that the DNS numbers you have just entered are present.
Dont forget to enable the services you want to use in "User Console > Services"