Homemade superdish can only be done in "Legacy" mode right now.
If you have access to a primestar dish, the LNB that comes with it will work. 1 or 2 outputs does not matter, either can be used.
If it is a 2 output one (H and V), then you will need a SW64 to make it work. Just plug one into 3A, and the other into 3B. Your 110 and 119's into the other ports, and you're dancing.
If it is a 1 output LNB, then you will need to use an SW21 in combo with an SW64 or SW44. Take one output of the SW44 and go into the SW21, and then feed the cable from the primestar dish into the other port on the SW21.
Aiming is the most difficult part. I aimed mine using a direct cable from the Vertical to the receiver. Then setup the signal test screen to Transponder 1 on Sat 121. My little SF95 sat finder was semi usefull. I locked on 119 with solid tone, then lowered the elevation about 3 degrees and moved the dish ever so slighly to the right. A solid 115 signal was the result.
Hope this helps.
Oh, and check out http://www.satelliteguys.us/forum/viewtopic.php?t=4017 for pictures.