Actiontec GT784WNV
The manual for the Actiontec GT784WNV router can be found at http://setuprouter.com/router/actiontec/gt784wnv/manual-1341.pdf
Setting up the router
- Log into your router (page 3) and click advanced setup
- Click WAN IP Settings from the left menu
- Scroll towards the bottom and locate #3 Select the DNS type
- Select Static DNS Address and type the address 208.67.222.222 and 208.67.220.220 (see figure a.)
- Click apply
Figure A:

Test your setting
After saving your new settings for your router, flush your browser and DNS cache by using the steps below:
http://www.opendns.com/support/article/67
http://www.opendns.com/support/article/68
Visit http://welcome.opendns.com and you will receive the "welcome" message. Congratulations!
I get the "Oops" message
No worries! Please open a support ticket at http://support.opendns.com. Be sure to run our diagnostic tool and send us the results URL after the tool completes, so we can further look into your issue.
Mac: http://www.opendns.com/download/mac/diagnostic
Windows: http://www.opendns.com/download/windows/diagnostic