Internet contains a tremendous amount of valuable web applications that can be used in many systems. To use this kind of applications with other systems, the interaction needs to be in a standard structured format such as XML web service. In this paper, we present a method to convert the current web applications into standard XML web services. The system design and implementation are presented. We applied the proposed system on two test cases: Jordan University of Science and Technology (JUST) course online schedule and Wiley product search engine.