Ok, 1st post, but this looks to be a good site.
I am a computer guy so hopefully I can speak on satellite stuff.

I saw numerous posts on splitting a satellite signal.

Here is my setup:
Direct TV Dish with 2 boxes inside.

I have a wiring closet where all rooms that used to have cable come into.
In this closet I see the wiring (big cable) coming in for Direct TV and the wire is split/cut
one connection going to the bedroom cable and one to the den cable.

Here is what I would like to do:
I'd like my upstairs (no box) to be able to receive the signal from whatever is showing in the bedroom.
i.e. I just want to be able to watch/listen upstairs with the same show in the bedroom (I know I will not be able
to change the station or volume upstairs).

I tried a basic splitter in the closet for the bedroom and the existing upstairs cable, but, the receive couldn't
get a signal then.

So, what are my options (dumb it down for me...)