I am a DirecTV user and soon will be upgrading to an HD DVR receiver. I still plan to use my two Sony UltimateTV units as part of the configuration. Since both Sony units are DVRs, I realize I will need two lines to each unit along with whatever is required for the new HD DVR, which I assume is the Hughes H10-250. Given this setup: Which satellite antenna is required for my purpose? Is an OTA antenna necessary for the Houston area? Will I need a multi-switch device and if so how many in/out options is recommended? Will I need new RG6 cabling throughout? Also, I currently have a kitchen monitor that is enslaved to the main TV in the den so they are always on the same channel. What changes are required when I replace both units with HD TVs? I realize I could get this information from some Circuit City salesman or a DirecTV installer but I would like to be armed with valid technical information so I can verify their recommendations. Thanks for your patience and help.