I don't know about the rest of you but entering a new catagory in the Master Catagory list in Outlook 2003 and earlier versions was a snap.
When I insalled Office 2007, it brought over all of my settings including the Master Catagory list. This morning I needed to change that list and had a dickens of a time finding it in '07. Here is where it is for those that have looked and haven't found it. Click on any of the folders except the Mail folder then click on Tools from the main tool bar, then from the drop down select Organize. You can then enter new catagories by entering the name and clicking create.