I recently moved into a condo with a dish that everyone shares.  I was told that I could just go and buy a receiver, which I got one from Best Buy, and just call Directv and have it activated.  But when I have tried installing it, I can only get a signal on the odd transponders.  Two people from Directv have come out to look at it and they have both ended up telling me that I just need to contact my property mangager and find out who did the original installation of the dish.  When I did that, they just told me to call Directv.  I am hoping that this is something easy that I can fix, because no one else seems to know how to help me.