I was annoyed at the ugly "PRO" text found next to the Quicktime 7 player's disabled Edit (and other) menu items. It was so ugly and "in-your-face" that I sought to remove it. Removal was easier than expected.
Select the Quicktime Player application in /Applications and Control-click it. Select Show Package Contents from the pop-up menu, open the Resources folder, and delete the ProMenuItem.tif file.
Start QuickTime Player, and the annoying PRO is gone!
[robg adds: I'm a firm advocate of non-destructive editing, so I'd suggest just renaming or moving the existing file, instead of deleting it.]
Mac OS X Hints
http://hints.macworld.com/article.php?story=20050503145216174