I need help connecting my Toshiba 44NHM84 DLP tv to my digital cable box from Cablevision (Scientific Atlanta 4200D via a DVI cable. The cable box has a DVI port and so does the TV, but when I turn on my TV after connecting the DVI cable to both and selecting DVI/DTV on my TV as the input I get a message on my tv screen saying "the DVI port is Blocked" and when I clear that message another one comes up saying "this TV does not support DVI/HDCP". I know the TV supports DVI because it's shown in the manual and the cable box instructions indicate it can be hooked up to a tv that has a DVI port. Has anyone seen this before and is there a way to get a DVI connection to work? THanks..HDnewbie