My primary residence is in Arizona where I have 3 genie boxes for HD service. For the last few years, I have been receiving non-hd signal @ my Mexico home on a standard receiver registered to my primary home and a self installed dish bought on ebay. My wife wants to upgrade to a bigger TV and HD. My question is: will I be able to continue to operate like I have been by purchasing new a new HD dish & receiver and installing it myself? If so, what is the recommended equipment I need and where is the most economical place to purchase it? Thanks!