If you're using a router, go to the connection properties on your computer, and look up the gateway that your computer is using on your connection. That should be the page you need to go to for the router configuration. It's possible that comcast screwed with it somehow though. I would use it if I were you as the big issues that I've seen with comcast is that their DNS servers seem to die or stop responding for some unknown reason. So, it would prevent issues if that were to happen. I've been using it for about 3 months now and haven't had any major issues. The URL search page is a little annoying though at times.