Removing the text heading on the frontpage

There is a text heading wrapped in a componentheading_ div class. To get rid of this, and display an image instead, look up this file:

components/com_content/views/frontpage/tmpl/default.php

Look for the div class componentheading, and wrap that div in a container div.

In your CSS file, set componentheading to display: none – and set a background image in your newly created container div.