How To Change the Login Background in Mac OS X 10.7.4

Changing the Mac OS X login background on version 10.7.4 is quite easy. Here's how:

1. In the Finder menu, click Go > Go to Folder...
2. Type: /System/Library/PrivateFrameworks/LoginUIKit.framework/Versions/A/Frameworks/LoginUICore.framework/Versions/A/Resources/
3. Locate the file appleLinen.png, make a backup and replace the file with your customised PNG image.
4. Log-out or restart your computer to see the changes.

Source: http://www.chriswrites.com/2012/05/how-to-manually-change-the-login-screen-on-lion-10-7-4/

Post Title : How To Change the Login Background in Mac OS X 10.7.4

How To Change the Login Background in Mac OS X 10.7.4,

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How To Change the Login Background in Mac OS X 10.7.4