How to set a picture as a Wallpaper in Mac OS X Lion

If you want one of the pictures stored on your Mac computer or one of your storage drive set as a desktop wallpaper, this is how you do it fast.

To  change a desktop Wallpaper on your Mac computer with a pictures stored on an internal or external disk ...

... open Finder ...

... go to the folder where the picture you want to set as a wallpaper is stored, right click the picture and choose Set Desktop Picture.

And that's it, your new wallpaper is set.

Click here for more desktop picture options.