Ever wanted to change the Drupal 7 markup? Get rid of all those pesky divs? If so, this is article for you. I will give you a simple example how to do this not by changing the site theme (template.php) but by using a theme function.
Yes, you have make a module, and yes, I will show you have to make it. You will also find, attached to this article, the complete code wrapped up in a zip-file. Using theme functions is not that hard so relative new Drupal users and themers should be able to follow, though, a basic PHP knowledge might come in handy.