Did you ever wonder why Apple decided to keep their old 10.1 aqua X logo in the "About This Mac" box in Jaguar? They already defaced their X logo on every box of Jaguar, so you might as well do it here, too! There's a tutorial (and a Jaguar X logo) here (credit to Andy Orr), and here are a couple of Terminal commands to speed things up (assuming you downloaded the new logo to your desktop):
% sudo mv /System/Library/CoreServices/[Some extra line breaks were added to narrow the width of the display; enter each command as one line with no spaces except put a space in the first command before "/Users" and in the second command before "/System".]
loginwindow.app/Contents/Resources/AboutBox.tiff
/Users/your_user_name/Pictures
% sudo mv /Users/your_user_name/Desktop/AboutBox.tiff
/System/Library/CoreServices/loginwindow.app/
Contents/Resources/AboutBox.tiff
Mac OS X Hints
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