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In order to satisfy an increasing need to respond rapidly to changing business requirements and knowledge, and to reduce implementation costs, the mainstream business world is progressively relying on the expert systems technology. In addition, recent e-business initiatives are requiring companies to provide "Web-enabled" systems in order to maintain a competitive edge in their marketplace. In this paper, we describe our experience in capturing the business logic and implementing a Web-based expert system for vehicle registration fee computation at California Department of Motor Vehicles. The system has been implemented using the Blaze Advisor rules engine and has been deployed to Sun's J2EE Reference Implementation of a Java application server. Our work has shown that using expert system technology to implement a Web-based, business-driven solution is certainly a viable and promising option. Deployment of the rule service as an Enterprise JavaBean exposes the rulebase various types of business clients, and provides a consistent and adaptable implementation of the business domain.