Uncovering Hidden Columns in Outlook 2003's Address Book

While displaying the Address Book dialog box in Microsoft Office Outlook 2003, one of my users resized several columns by dragging the column divider to the left, causing the adjacent column to disappear. How can she make the column reappear?

That's a tricky one! It took me a while to figure out.

Let's say, for example, that you were displaying the Global A . . .