Dumb question of the day...

[echoone]

I'm embarrassed for even asking but searching around I wasn't able to find my answer. So here it is. When changing backrounds to a custom wallpaper, how do you apply the landscape wallpaper? I made both 480x800 and 800x480 versions of the new backround but I can only get the 480x800 to apply properly. When the phone is in landscape it still displays everything in portrit mode. What am I missing here?