[balinor]

Assign a class to the cell that you want the image to appear in. Most likely this will be in customer/home.tpl, the cell for the central space. So your <td> tag would look like this <td class="speaker">.

Now go into skin1.css and add this:

.speaker {
       BACKGROUND: URL(images/yourimagename.jpg);
       BACKGROUND-REPEAT: no-repeat;
       BACKGROUND-POSITION: 50% 50%;
}

Upload the image to the skin1/images folder.

That will set the background image to be centered in the cell and non-repeating. Hope this helps!