This project is an accompagnying measure for the HANSA project (Healthcare Advanced Networked System Architecture) which develops a middleware and an integration path to unite existing legacy systems on top of a common open middleware of healthcare-oriented functions. The Use DHE ???? project will help to disseminate this concept to a larger user group by different means, including a conference on Healthcare Information Systems Architecture, and a WWW server which will host documents on the DHE middleware and implementation strategies. It will also produce specific training and information material for different user groups to foster the practical implementation of open architectures through use of common DHE middleware.