I just ordered a free DVR upgrade for my older model (TiVo 35hrs.) What are the different DVR models D* has available? Im not aware of how D* offers various models. Are they all TiVo? Are some not TiVo? How do I know If mine will be TiVo? And How do I know how many hours it will be able to record to capacity? Only thing I know is it is a Hughes (If that helps at all). Someone please help with these questions so I can call D* and get the specifics on my newly ordered DVR and maybe change it if need-be. Thanks.:up