I am now the proud owner of 3 TiVo HDs. I live in Delray Beach, FL. Comcast is my provider (lol). My HOA provides basic cable in the dues so my Comcast bill right now is ONLY internet. I have the locals in Hi-Def through QAM, obviously without mapping. I only want HD channels through an M-card. Does any one have experience with this? Will I need to subscribe to digital tier first? How much will each M-card cost? Is there also an outlet or service fee? I'm Soooo confused!