Currently, Web-based applications without personalization and developed with "ad hoc" practices are requiring substantial evolution. Particularly, e-commerce applications are implicitly bound to a fully customisable fashion, attending individual users or group of users needs. Hence, personalization is a leader performance feature of today's Web applications to capture users' attention. In this paper, we introduce a Model-Driven Reengineering Approach based on the Object-Oriented Hypermedia Design Method (00HDM to personalize existent Web applications. We illustrate the proposal through a real non-personalized case corresponding to an international oil corporation.