Information provision over the Internet offers little by way of "intelligently" assisting users in retrieving personally relevant information. Web portals are envisaged as tools for matching users information needs in order to enhance their ability for decision-making. This paper looks at portals as a new type of intelligent decision support systems, which incorporate problem domain knowledge in order to improve efficiency in information provision. The main focus of the paper is in suggesting how certain characteristics of an intelligent decision support system can be implemented in a portal, which seeks to deliver personalised information to support efficient healthcare decision-making.