You're welcome and thanks for the nice comment about my theme. The four images you are referring to are widgets that are published to the Bottom 1, 2, 3, and 4 positions with the page using the full width page template.
I'm using a text widget, but to give you a starting point, here is the code I used in the first one:
<p><img src="http://demo.styledthemes.com/preference-free/wp-content/uploads/fp1.jpg" width="265" height="180" alt="gallery1tn" class="imageborder" style="display: block; margin-left: auto; margin-right: auto;" />
<p>Yes, the Preference theme was designed and built on WordPress 3.5 to take advantage of the newest and greatest features that comes with it. Plus, you can use popular plugins as well!</p>
You can use the code above as a starting point, then simply replace the content part and the image to your own. My Pro version of Preference also has this ability but also includes more.