Planning on buying Mom the Tivo DVD unit, hoping she can record some shows for my kids every week, since we have no network, cable or satellite service in our home. Can you burn more that 1 show on a disc, if so how many hours of shows fit on a disc? My home DVD player, once I finalize, nothing else can go on that disc, is that the case with Tivo unit? Is it possible to re-use a disc? Is burning to disc easy enough to do that older less tech savvy user will be OK? I'm trying to determine whether this is a viable solution to our no TV problem in our home, maybe you have an opinion... Thanks!