The PropeR project studies a genric combination of an electronic health record (EHR) and decision support software (DSS). This study comprises different medical domains. GOAL – develop a distributed EHR system that is flexible enough to be used in different domains without major modifications. METHODS – use of standards and standardized specification and available open source components to develop an EHR system that meets the goals. RESULT – PropeRWeb is a generic webbased EHR system that is flexible enough to easily accommodate different domains. DISCUSSION – discussion of some of the problems encountered in the development of the EHR system.