Here is the channels.conf for Comcast (formerly Adelphia) digital service in the Gloucester, MA area. This just includes the free unencrypted local channels, since the pcHDTV-5500 wouldn't be able to tune encrypted streams anyway.

 
702:729000000:QAM_256:33:36:2
704:723000000:QAM_256:49:50:1
705:723000000:QAM_256:52:53:2
707:723000000:QAM_256:55:56:3
711:729000000:QAM_256:49:52:3
725:729000000:QAM_256:35:37:1
756:549000000:QAM_256:66:67:2
17:549000000:QAM_256:64:65:1

Callsigns:

 
702 - WGBH (PBS Boston)
704 - WBZ (CBS)
705 - WCVB (ABC)
707 - WHDH (NBC)
711 - WENH (PBS New Hampshire)
725 - WFXT (FOX)
756 - CW
17 - UPN? (Not on Comcast list)

Corresponding XMLTV IDs? for SchedulesDirect? listings:

 
702 - 36037
704 - 20431
705 - 19596
707 - 20358
711 - 25002
725 - 20362
756 - 32723