Dude, I would love to put up just the wallpaper, but the pictures aren't mine. That is the only problem, some other guy made them and for me to put them up would just get taken down from DA rules and I just wouldn't feel right.
BUT, here are the links to the guys page for each picture, if you take them copy each of them and resize them for your screen, you can have your own AvP wallpaper.
Predator:
[link]Alien:
[link]Marine:
[link]Don't forget to
them