I've been reading this forum (and Apple TV forum) to try to determine if I can make one of these units work on my Mitsubishi WT42315 rear projection HDTV. It has DVI but no HDMI inputs.I'm semi-literate at best regarding this technology (wrong side of 70) and wonder if someone has the time to look at the PDF (available online) of the Mits manual and advise me of what, if anything, I need to do to make a Roku device (which one?) work for me. I receive my TV through a Comcast cable box. Thanks in advance for any help provided.