I'm thinking about making a move to Dish, and have a coupon for a free Vip722. I don't have an HDTV yet, but plan to get one within a year. Can I use this DVR with 2 non HDTV's, but still get the digital locals & (sub-channels), if I pay for the local package? It looks like you need at least one HDTV, but the info is not clear to me. Thank You.