I am really dim. I can't find a method (even on the internet!) of adding to the four pictures (dog/mountains/purple flower and one other) that appear as 'wallpaper' when I first switch on the TV and it can find no input signal.
So two queries
How do I add the pictures?
and
What format/size do they have to be?
I hate the (lack of) documentation on this set/operating system. My previous Panasonic plasma had a 400 page manual - the answers may have been difficult to find but they were sure as hell all there.
Again would appreciate any help.
Thanks.

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic