NOTE: This video is no longer available as it contains outdated content. For moving database changes, you should look at using Features. Introduction to Features Module gives a good overview.
Moving field changes from development to live doesn't have to be a stressful, error prone, and tedious process. Leveraging the macro module to test and package your field changes can make pushing changes painless. This video accompanies an article on the same topic: Moving CCK Field Changes from Dev to Live