Loginox
Jake Bechtold | May 19, 2009
MAC OS X ONLY: Apple makes it pretty darn easy to switch your desktop wallpaper. Just a couple of clicks, and it’s done. But what if you want to change the wallpaper of your login screen? I’ve shown you before, but Loginox makes it easier.
All you all do is drag the image you want to use into the window and click the Set new login image button. You’ll have to enter your password. The application requires a 2560×1600 resolution wallpaper image- so you may have to do some prep work before hand
That said, it really does take the guess work out of this hack. Loginox is Mac OS X Leopard only, and is 100% free.
Loginox [via Lifehacker]