I have a picture from my Halo 3 campaign all the way on my computer background in less then 5 minutes. It is sweet.
Like the shot?
I was so happy when I finally got up there, all those tries, and two ghosts and a human easily got me up there!!!
(http://i218.photobucket.com/albums/cc99/Pokesamrus/5086308-Full.jpg)
Also, I accidentaly fast forward, and I don't know how to rewind, or I could've got a pic of an anti-aircraft wraith blowing up a hornet with a big explosion and a spartan jumping out!