I will be subsrcibing to HDTV through comcast and I want to purchase an external TV tuner (through USB I guess) and hook up my Comcast hdtv tuner to the notebook tuner and then to my computer. My question is, does a true HDTV external tuner exisit for notebooks? Also, is the picture compromised as it first goes through my comcast hdtv tuner, then through my hdtv notebook tuner? Finally, can I run the comcast hdtv tuner to a run-of-the mill external tuner and still receive a true hdtv signal. Any info is greatly appreciated.
I want my hdtv