This is a guest post from Adam, my Co-founder at BEgINr Media
When finished: After you get through this tutorial you will have made a custom Quicktabs style in Drupal 6.
This is how to do it.
Stuff I am assuming:
...you have downloaded the Quicktabs module from Drupal.org and Install it.
...you have a photo editor (Gimp, Photoshop, etc)