Have you talked to DIRECTV or the apartment complex? It should work with just a single input, unless you have a stacked signal.

I have contacted the office personnel and asked them to have the DirecTV technician call me, as he is the one who stated a DVR Plus would work just fine - I have called four times in the las three days but no one is calling me back - I was hoping that someone could tell me if I need additional componants such as a diplexer - there are two satellite input ports of which #1 is connected - I have the dish type selected and a choice between SWM and Multiswitch - if I select SWM, my Satellite type becomes unavailable so I have selected the Multiswitch option - finally, I can choose between single or dual Tuners, I have tried all avilable options but the response is always, 'can't detect a signal'. I thought I'd spend another day or two and then send the DVR Plus back to DirecTV and look for anoth solution...

Do I need something from: http://www.weaknees.com/swm-directv.php#resources

You do not need SWM equipment to use the DVR. You will only be able to choose ONE TUNER, so don't try choosing two.