Be patient

[jklangbehn]

I have for hd tivo comcast with cable cards.. all networked. you set them up then they need to connect for like 1 our more to get all the updates and then no problems *but my ones - I don't know know how to on demand that is my only question.*

[lkupersmith]

Your post is in the wrong place - this forum is for Comcast's own TiVo box, not the TiVo HD DVR.

Answering your question - You can't access onDemand except using Comcast hardware.