For every home page style, except the Free home page, you can show from onw to three special blocks on every page of your site for the important announcements.

You can access this panel by clicking on one of these blocks.
For every highlight you can enter a text and decide wether to show an image too.

For sites with "Dixieland" or "Techno" themes:
Contents of the highlights are not necessarily the same in all the pages but can be customised for every page. In the page options, you just have to choose "Custom highlights for this page" under the "Highlights" entry.