I just got Direct-TV about a week ago. The installer came out and hooked up my MRV which I believe was working. I decided to switch the HD DVR and HD receiver locations and now it doesnot work. I made sure all of my connections were the same as the installers but now I get the "no network DVR's found). The installer originally hooked it up without an internet connection or router. Will this work without one? I've attatched a drawing of how I have everything hooked up. Please Help!!