When I ordered the TiVio I was told all I needed was a single multi stream card from Comcast. They came and installed the card but I quickly found out that I can not record one channel and watch another. When I called TiVo they said a software upgrade was being developed and no time frame for release was given. TiVo said I now need two cards? I'm also having a problem with my existing cable card that does not allow all my channels to be displayed even after two additional hits from Comcast. Does anyone know what I should use or should I return the TiVo and go back to Comcast DVR? Also can I watch Comcast pay preview channels?