Larry,
One piece of advice for you that I picked up at a rally from another RE owner. You will likely have to temporarily remove the 42" TV from the wall in order to make all the connections for your satellite receiver. This is a 2 man job for certain.
While you have it off, I would take the opportunity to connect every conceivable cable to it before you put it back on the wall. Then run the other end of all those cable to the left or right equipment cabinet so you have them for future use. Be certain to label the ends of the cable so you know what port they are plugged into.
For example, later, you may want to use the TV as a computer monitor to display a slideshow of pictures you have on your computer. I believe most of the Olevia sets have a computer VGA port on it. I'd order a 25' VGA cable with male to male connectors from
CablesForLess.com
Same for HDMI, Components and for Audio. Maybe 12' cables for those. CablesForLess is a good resource that I use often.
Best of luck.
Jim