Hello, I need some help with a few things. At my work we have about 100 hdtvs, we have 2 excercise machines with built in sd tvs. We currently have about 50 sd channels, each channel has its own satellite box, all tvs connected with coax. The issue is that I will be soon getting hd , and I cannot find a way to make those two sd tvs recieve channels. The excercise tvs only have a coax connection . I was wondering if I can use a DTV converter box, but I don't think that may work. We have not yet had this conversion done, so I don't know exactly what equipment they will use, but I believe all that will change is the satellite boxes for each channel.