I suppose it is time that I post my Tivo Series 3 Install Story: After a few hours of aggravation, I finally have my Series3 running on two M-cards. I do not have all of the HD channels (missing the sports HD channels). However, I do have dual tuner ability- which is a huge step over simply having a single tuner. A cable tech is coming over in one day in an attempt to remedy the HD issue. A few tips I have learned from my experience: 1) To get through quick to your cable provider in an effort to 'hit' your cable cards, follow the phone menu that states you want to cancel your cable service. Then just tell the guy on the other line to hit your cable cards. I also found that I had a larger selection of cable install dates when I went through the 'cancel' guy. They really seek to please you- and they do. 2) A restart of the tivo worked to recognize my second cable card. Nothing else worked as my tivo did not automatically recognize it. 3) When the cable company hits your cards, it will not automatically recognize all of the channels. Give it about 15 minutes. 4) The Tivo website cable card trouble shooting guide is very helpful. Print that out along with as much info on cable cards that you can before your cable card tech comes over to do the install. Educate yourself before the install and expect that a complete moron will arrive.