guessing here but ........... , if the ntl box has an rf output then that could be plugged into the pace box ............ , if it can be plugged into the pace box could the pace box be tuned to the frequency that the ntl box outputs on ............. , same sort of thing as tuning your tv into the vcr output ............. , like i say i am only guessing , maybe i am right maybe i am wrong ............. , who knows