BK'witz
I'm assuming this all standard satellite, non-HD type (22khz switching). I'll give Channel Master part numbers, and the site.
First, use a dedicated power supply/amp for the LNB's, part 5224IFD.
[Link: cmnc.com]
That means the individual receivers don't power the LNB's. It makes the distribution simpler, because you're only dividing signal. This also amplifies the signal to make up for all the losses and then some.

Next, from the two outputs, which are labled 13 volts and 18 volts, (there's no voltage output, actually, it's just a way of identifying which polarity, which is for tuning purposes by the individual receivers. Main thing is, don't mix 'em up !! Keep 13V ports with 13V, 18V with 18V. Sounds simple, but it easy to forget. Don't ask how I know !!!!) you use two splitters, made for this purpose, DON'T substitute!! Part 2212IFD.
[Link: cmnc.com]
So now you have two 13volt and two 18volt sources.
From here, connect one 13V and one 18V to the 4way switch, and the other 13V and 18V to the 8way switch.
Sit, down, pop a cool drink, then run around the house and check 'em all out !!
Dan