Changing your Mac's wallpaper is one of the quickest ways to personalize your computer and give your desktop a fresh look.

After you spotted the file,drag the new login background into the folder and change the filename into DefaultDesktop.jpg. Next time you log on your Mac OS X Leopard, you should get your new login ...

You can even change the background of your Launchpad wallpaper thanks to OS X Daily, whom ask that you prepare a PNG (hopefully one that tiles nicely) before walking through the five required steps.