Hello everyone, OfficerProblem here. Today I would like to give you a quick Hackintosh customization tutorial on changing the "Mac OS X" image in About This Mac on Lion. It should be similar in other versions of Mac OS X. First things first, the "Mac OS X" text is part of the image with the Apple logo, it is not a string stored in a file somewhere. You can use any text or none at all in the image. Ok! Now on to the fun stuff. Open your favorite image editor and create a new image, 214x124 pixels with a transparent background. Next, create or place an image in the the space provided. Make sure it makes sense on the About This Mac screen, and try to make it look good. If you are practicing graphic art like me, this should be a no brainer! ;P Save the image as: MacOSX.tif in a convenient place. Next browse over to /System/Library/CoreServices/ and right click loginwindow. Then press Show Package Contents. The go into Contents/Resources/ and back up the existing MacOSX.tif in a convenient place, just in case. Replace it with your custom MacOSX.tif, reboot, and enjoy!