Okay!
The 322 has two satellite inputs. You need a
DPD2 and a
Dish Pro Plus Separator (Edit: Frequency 800-2150Mhz)
Here is how it is wired at my stick house. My LNB has 3 horns with two lines coming into he house supplying two satellite receivers. One 722 and one 322. Both are configured the same.
One satellite antenna line into the DPD2. One output of the DPD2 into the Separator. Both outputs of the Separator into Sat 1 and Sat 2 inputs on the receiver. The Distribution out from the receiver feeds to the empty DPD2 satelite input/output. This line feed the second receiver.
Here is what I plan on doing in my RV. I have th Dish Pro 1000 antenna with 3 LNB's. I use the number one feed from the antenna into the DPD2 then into the separator. The separator then feeds the two satelitte inputs. Looking at the back of the Wingard I am going to put another separator, splitter, or whatever it takes to feed the normal antenna in, and then feed the second bedroom tv to one line of the sep/splt, or whatever, and one line from the distribution out to the other input. The output will feed the 2nd br tv. You will need two remotes to independently tune channels. I use HDMI input for the front tv and Channel 60 for the back bedroom. The 322 is programmable to different channel output.
A lot of this has been covered in the "Let Us Entertain You," thread.
Edited: From what I understand, DirecTV will require 2 Receivers. Or you could split the signal out and look at one channel on both tv's.