A regenerating task in Outlook 2003 is like a recurring task except it recurs 
only when a certain amount of time passes after the last time you completed the 
task. Suppose that you get your hair cut and styled every five weeks. If you're 
very sick for a week and one haircut happens a week late, you still want to wait 
five weeks for the next one. If you schedule your hair appointments in Outlook, 
you use the Regenerating Task feature to enter your hairstyling schedule. 

To create a regenerating task: 

  1. Open the task by double-clicking it. 
     The Task form appears. 

  2. Click the Recurrence button in the toolbar in the Task form
     (or press Ctrl+G). 
     The Task Recurrence dialog box appears. 

  3. Click Regenerate New Task. 

  4. Enter the number of weeks between regenerating each task. 

  5. Click OK. 
     A banner appears in the Task form describing the regeneration pattern
     you've set for the task. 

  6. Click Save and Close. 

Your task appears in the list of tasks once, but it has a different type of icon 
than nonrecurring tasks have so you can tell at a glance that it's a regenerating 
task.