Here's the setup, I have one Comcast basic cable box. It only has 1 cable input and 1 cable output. I want TV on my projector except it does not have any sort of cable input. So, I needed something to convert from cable to hdmi. The cheapest thing I could find was a digital converter box. So, I set it up as such Comcast Cable Box->Digital Converter Box->Projecter, it will not work. I figured I could just go to channel 3 on the digital converter box and flip through channels via the comcast cable box. Instead of that, I get about 6 channels through the digital converter box and none of them are the input from the comcast box. Can I get these two things to work together? I really need someway of going from cable to hdmi.