It's been five years since TiVo first promised DirecTV customers an HD DVR and two years since the company reaffirmed that claim, so if you've been waiting patiently you probably know what we're going to say -- it's been delayed yet again. TiVo marketing VP Joe Miller told PC Magazine that the fabled DirecTiVo will actually appear "early next year," which should give you plenty of time to work out your rage. Before you storm off to your standard-definition video collection, however, there's another thing you might like to know: the executive also not-so-subtly suggested that T