Problem Displaying Comments in Balloons

I am currently reviewing a document in Word 2007 and have encountered a
problem displaying my comments. Tables are utilized extensively throughout
the document and the document has multiple sections. Some sections are in
portrait format and others are in landscape format. I am able to insert
comments in balloons in the first (portrait-formatted section), however when
I try to insert a comment in a landscaped sections, it looks like I lose the
ability to insert ballooned comments. After that, the only way to display
the comments is through the review pane, which shows the comments
horizontally or vertically. The problem is I don't want to display the
comments in the review pane. I only want to display my comments in balloons.
Why can't I display them in balloons??? It's very frustrating.