Users need to understand their role and how their part in using the computer system effects others.  They need to understand the importance of the information they put into the computer system and how it will be used.  They need to see the overall picture and how they are benefiting the company.  Users need to be trained on how to react to different situations and recognize when something is not right.  By catching and reporting problems early, they can be more easily fixed before they become major problems.  Users need to be trained in their particular role, as well as have a understanding of the roles of others through out the system.