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Customize your mac's About this Mac dialog

Step 2: Backup everything

Picture of Backup everything
 We will edit the SystemVersion.plist, so back it up! 
Just a tip, the copyed file (SystemVersion.plist) MUST be copyed and pasted to any folder EXECPT for the CoreServices file, because (even with the awesome 10.5 Leopard), you can't edit the .plist file in the CoreServices folder. Mac OS X will not let you, and you have to edit the file that YOU COPIED and then save it, then you have to move it back to CoreServices folder and authenticate your password to allow Mac OS X to make this move...... Please view my ibles for more info.
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