All but the InFocus at Staples ONLY have RGB (computer), S-Video, or Composite Video inputs. Watching any kind of moives from a DVD player via S-Video will NOT be pleasent on a very large screen due to the very limited resolution of S-Video. The InFocus has Component inputs which will allow it to display much sharper images...IF your DVD player has that output. Can you watch regular cable on any of the projectors? That all depends upon your equipment. If you don't have a cable\satallite box and only have a Coax (single black cable) from your wall to your TV, then NO you will not be able to use any of these projectors. (None of them have TV tuners). You could use a VCR as a tuner and hook it to any of these projectors IF the VCR has Composite output. However be forwarned, a "decent" picture on a 27" TV will look simply horrible on a 90" screen especially via Composite output. Hope this helps! :)