Ok, so in Philly, Comcast has moved alot of the channel lineup around, before for instance, channel 301 might have been HBO and Channel 310 might have been HBO HD. If you have one of their boxes, there is a little menu that pops up and prompts you to watch in HD if you want. Before I was under the assumption that this went to another channel, actually it doesn't, it just converts to a HD stream instead. This shocked me because I actually thought Comcast was just being crappy and didn't have all the channels in HD. Is there any default way to Comcast to just broadcast HD channels, or am I stuck essentially not getting all my HD premium channels because the TiVo box is unable to switch each channel from SD to HD.