There should be either an RF output (channel 3 or 4) on the Dish satellite receiver, which you can connect to the RF input on your VCR with it's tuner tuned to either one of those two channels. Or there should be A/V outputs on the receiver which can be connected to A/V inputs on your VCR.
The best way to do this, is with the TV on, and connected to the VCR so that you can see what is going on.
If everything is set up right, on the TV, you should see the signal from the Dish receiver feeding through the VCR to the TV.
Then, if you want to record a movie coming on at 8PM, just set your Dish receiver to change to the channel the movie is on at 8PM and set your VCR to start recording at the same time.
But, you won't be able to watch anything else from Dish while this is being recording, unless you've got two tuners in the receiver.