Installer coming on Monday 26th, 2009 Which HD DVR receivers are they giving out now? Which HD DVR receiver should I try to get or NOT get instead? What do I need to make sure he does during the upgrade to an HD sat on roof and other parts? Such as AM-21 or B-Band converters or whatever else. I have read post over the months but can't recall the problems I need to watch out for. Thanks for the fast help on this subject!