You just need a normal 90cm dish and Ku-FSS LNB. If you do not want any of the other dish channels you can just run a cable strait from the LNB into the back of the Dish satellite reciever (a dual LNB will support 2 recievers). This is the least amount of equipment you would need.
If you want to see more you will need either a superdish or a SW64. You can feed 119/110/121 into the SW64 and feed the output of the SW64 in to 4 recievers.
You could also just get 119/121 by using a SW21, one going to 119, one going to 121 and the output going to 1 reciever. You could do 2 recievers using 2 SW21s, one for each reciever.