time off tracker

I am developing my first module and decided that the application I'm building would make a good case study for learning a lot of aspects of Drupal (including cck, workflow and actions), and so I'm putting it here, with an eye towards posting how I've accomplished the various functionalities, soliciting input for how to approach certain aspects of the application (a few of which are stumping me), and finishing up with a demo and/or webcast of the finished product. I will contribute the module, too, once I figure out how to do that :-). Bottom line - we need learners AND experts in this "chautauqua" to make it a real learning experience. So please jump in and follow along, comment, ask questions, and provide expert opinion!