First, I know nothing about hooking up a satellite system. All the acronyms mean nothing to me. I have direct TV. In the den we have an HD\DRV. The other box is not HD. We had DTV at work and they switched to Comcast. The boxes at work were H24. DTV did not want them back so they were going to toss them out. I would like to bring one home and replace the non HD box with it. After reading a little do I need a SWM power inserter? There are 4 cables coming off the satellite and going into the basement. The cables go into a Zinwell wide band 6x8 multi-sw. Is there anything else I need?