It really depends how your TV2 cable is run. There is a long black coax cable coming out of the back of your box that runs to your 2nd TV in the bedroom. Where does that cable go? Is it going through a basement, crawl space, attic, or along the floor? Once you figure out how it is getting from point A (the 722 box) to point B (your TV in the bedroom), then you just need to figure out how to re-route it to the other bedroom. However you accomplish it, all you need is a coax cable running from the TV2 output to your 2nd TV. It is impossible to tell you exactly what you need to do without knowing how your wiring is setup, but it shouldn't be too difficult to figure out.