TV, Receiver set up

I have been given a plasma screen (LG MZ42PZ) with a JVC DV3R but no instructions. I have found some instructions for the JVC online but can't make sense of how to set up the screen with the JVC unit and with my existing Thomson set top box. (We don't have SKY). We apparently have all the cables / scarts we need??!! Can anyone offer any advise please.