Comcast Cable Channel Guide

I hook my Comcast Cable directly to my HDTV (with digital tuner) without using one of their cable boxes. Works fine. Problem is that Comcast's channel guide is only applicable to their cable box users. With direct cable connection to TV, to find non-broadcast channels, ESPN for instance, you have to hunt through several hundred unidentified channels to find. Comcast is very secretive about location of channels. Would appreciate any suggestions.

veejay