You can access this screen from the "Project | PocketPC Options" menu. This screen allows you to control the formatting of the Contents and Index of your help file at compile time. When you compile, if you have chosen to allow Fast-Help to automatically generate your contents, your "Title" will be added to the top of your help file, followed by your contents items. Use the formatting options on this screen to control the font, size, style and alignment of each option.
If you have chosen to include an Index in your help file, then the formatting options here will allow you to control the look of your index items.