Currently, I have a single Dish 625 DVR. I can pause/rewind live TV on the two TV's it's connected too. I'm considering switching to DTV and I'm trying to understand how the HR34 will work. If I get the HR34 and then get the free HD Receiver's they offer on the other TV's, can I pause/rewind live TV on them too or will I have to have a HD DVR on all TV's? Thanks.