I want to hook up both tuners on my direct tv dvr and was wondering if i had to attach a multiswitch from the cables (4 of them) coming out of the 3LNB satellite. or can i just split the cable in the room using the multiswitch, cause i really don't want to run a cable 100ft if i can just get the multiswitch and then split it from the cable inside the room. thanks in advanced.