One question you've been asking is, "How do I Track Changes in Microsoft Office PowerPoint 2003 like I can do in Microsoft Office Word 2003"? While PowerPoint does not have a Track Changes feature exactly like the one in Word, here are some alternative approaches that might do the job you want.
After you type your comment you can move it around on the slide. You can add multiple comment boxes to a slide and change comments. If you make a change to another reviewer's comment, your initials appear on it, and you become the author of that comment. You can also print reviewer comments.
Tip Display the Reviewing toolbar, which has toolbar buttons for easy access to Insert Comment, Edit Comment, and Delete Comment.