First you need to upgrade the Cable Box to the HD box. Then just use a two-way cable splitter and split the input cable, one leg to cable box, one to Tivo. Connect cablebox to TV using Component (RGB) and Audio (RW) cables. You could use HDMI instead, but many Comcast cableboxes do not support HDMI.
The other leg of the split would go to Tivo, and then connect Tivo to the TV using s-video and stereo audio (RW) cables.
You will just need to switch inputs on the TV to watch Tivo or HD.
This will only allow you to record on TiVo the basic channels. If you want to record digital channels on the TiVo also, you could forget the cable splitter and use the AV outputs from the cablebox as input to TiVo and use IR (or serial cable) to change channels on the cablebox, but this would lead to confusion when TiVo tries to change channels and you also are watching the HD channels.
Or just forget all of this and get the TiVo HD and move the S2 to your bedroom.
Comcast, Cox, TW, Charter and BHN are cabal companies.
(That is not a spelling error. Check the definition.)
Last edited by jrm01 : 10-12-2007 at 01:01 PM.