Marvel has released three desktop wallpaper for their pair of superhero summer tentpoles -- one for Thor and two for Captain America: The First Avenger.  Each takes one of the recently released images of Chris Hemsworth as Thor and Chris Evans as Cap in various action poses (including "running through the factory" and "about to crush you a mythical hammer"), slaps on the logo, and sizes it to fit your computer.Thor opens on May 6; Captain America: The First Avenger follows on July 22.  Hit the jump to see the images in high resolution.You can find the right size for you desktop at Marvel.  Click for high resolution.

Paramount Pictures and Marvel Entertainment present the epic adventure, “Thor,” which spans the Marvel Universe from present day Earth to the realm of Asgard. At the center of the story is the mighty Thor (Chris Hemsworth), a powerful but arrogant warrior whose reckless actions reignite an ancient war. Thor is cast down to Earth by his father Odin (Anthony Hopkins) and is forced to live among humans. A beautiful, young scientist, Jane Foster (Natalie Portman), has a profound effect on Thor, as she ultimately becomes his first love. It’s while here on Earth that Thor learns what it takes to be a true hero when the most dangerous villain of his world sends the darkest forces of Asgard to invade Earth.

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CAPTAIN AMERICA: THE FIRST AVENGER will focus on the early days of the Marvel Universe when Steve Rogers volunteers to participate in an experimental program that turns him into the Super Soldier known as Captain America.

Born during the Great Depression, Steve Rogers grew up a frail youth in a poor family. Horrified by the newsreel footage of the Nazis in Europe, Rogers was inspired to enlist in the army. However, because of his frailty and sickness, he was rejected. Overhearing the boy’s earnest plea, General Chester Phillips offered Rogers the opportunity to take part in a special experiment… Operation: Rebirth. After weeks of tests, Rogers was at last administered the Super-Solider Serum and bombarded by “vita-rays.” Steve Rogers emerged from the treatment with a body as perfect as a body can be and still be human. Rogers was then put through an intensive physical and tactical training program. Three months later, he was given his first assignment as Captain America. Armed with his indestructible shield and battle savvy, Captain America has continued his war against evil both as a sentinel of liberty and as leader of the Avengers.