We are a new subscriber to digital cable, with one HD box in the living room and are satisfied with it. But not satisfied that we are now told we need a digital converter box in each other room to get anything more than "basic cable". I've spent lots of time on this site to find out about purchasing them and found out that I had to make sure the cable company would activate them. They said they would, but that the guide may not display the right info, which is OK.
Now the question: What other stumbling blocks need I be concerned with before getting a couple on Ebay?