I take it you don't have DP+44 Switch...
Depends on how many satellites and receivers you are supporting. My 942 arrived yesterday from the DishStore and I am going to hook it up tomorrow:
Currently, I have one (1) leased 942 and two (2) 811s. Although I have three receivers, I am supporting four tuners. I receive programming from three satellite locations: 110/119 (Dish 500 w/DP-Twin) and 61.5 (Dish 500 w/DP-Dual). All three satellites and tuners connect through a DP-34 Switch. In order to add my 942 (dual tuner) I will be adding a 2nd DP-34 Switch by chaining it off of the first DP-34. This is a quick and inexpensive solution since I already ran extra coax months ago in expectation of the VOOM HD DVR.
What is your current setup...dishes, LNB types (legacy, Dish Pro, Dish Pro+, number or receivers, etc.?