I signed up for Directv one year ago and I'm upgrading to HD this weekend. I think I currently have a 3 lnb dish and the tech is going to install a 5 lnb oval dish. Can he use the mounting bracket that is already secured to my house or will he have to install a new one? I have two cables coming from my current dish into the house to my 6x8 multi switch...each cable has 2 wires in it...will he have to run additional cables? I'm asking these questions so I can do some prep work before he arrives.