I am a bit confused on whole home DVR. What exactly do I need? I am confused by looking at the website. I have three HR22-100 receivers. Are these compatible? I have a wireless modem for my DSL. Does this service use this or do I need a different router? Do I need wireless attachments on each HR22-100? Do I buy these or does Directv provide these? Will the "traffic" going through my wireless router impact my internet access throughout the house? Cam I have two wireless routers/modems running at the same time - or will I get conflicts? What is the service call cost? Thanks so much.