The Atahualpa WordPress theme will be removed from web.unc.edu on May 22, 2013. Please make plans to upgrade to a new theme. We’re recommending that you switch to either the “Twenty Ten” or “Twenty Twelve” WordPress themes as soon as possible. Both of these are well-supported and allow header customizations. The Twenty Twelve theme is also configured to be “responsive” so that your site will be properly formatted for mobile devices. You can also add any custom CSS you would like to the theme using the Improved Simpler CSS plugin. Below is a video overview of some work to convert an example site over to the Twenty Ten theme.
If you have questions as you work on your theme you can always post them on the support forums.