I am going to call D* today to see what kind of offer they can give me to upgrade to HD. I've never done this before. Can anyone tell me what to expect, and if I accept the offer how the process works? Do I order the H20 or HR20 and then schedule the install when I get it? Does the new dish come with the new receiver or does the installer bring it? How long does it usually take? Any other tips/ info I should know?