Drupal has a lot of forms to fill out and not all of them may be just the way you want or need them to be. Modifying forms is a topic that is often met with groans but once you understand the two methods to accomplish the task and the basic, underlying concepts, it really isn't that hard to do at all. You'll be a form-modifying, input-customizing wiz in no time. This article will briefly discuss what's going on and then mainly focus on showing working examples for both methods in Drupal 5 and 6. You should be comfortable creating a new function, looking at arrays and a having at least a passing understanding of the Forms API is real handy. Also note that in the examples below I have them wrapped in php tags but you should not include those if you copy/paste. That is just so it looks nice and clear for the article.