I have the SD 18" dual LNB satelite system and want to install the HD DVR 22 I just picked up. I want to activate it now and install the HD content and slimline 3LNB SWM at a later date. Will this work? Do I need to do anything other than tell D that I replace a DVR? Thanks What is the BBC? Do I use them on standard dual LNB and then remove them whe I switch to SWM?????