Does EyeTV give me the ability to plug the coax cable from my wall into the EyeTV so I can view my Comcast Cable channels on the iMac? I don't want to deal with analog, over-the-air, free HDTV - none of that. I just want the ability to use my iMac as a TV with Comcast digital cable. I can't seem to determine if this setup is possible from reading the EyeTV product info. Thanks for any help!