as a newbe, i need some help mapping/assigning/learing specific hard key funtions, such as volume up/down and channel up down, to a specific device, such as DVD player. said another way; when i am in the DVD device mode, i want the volume up and down to work accordingly. right now, i must select main AV receiver to adjust the volume on the hard keys. make sense?

if possible, can someone walk me through the steps please.