This research for master degree seeks to understand the Information Architecture of hypertextual systems - in which the users are neglected by today s process of development - having the study of case based on the websites of some of Rio de Janeiro universities. It is intended, with the research, to improve the websites usability, making the navigation and localization of information easier for the people who interact with the hypertextual system, pointing out the implications to the Information Architecture. A few methods and techniques were used, in four steps: 1. Through exploratory research, it was sought to perceive what the developers think about the construction of a university website and, on the other side, what the users experience when they navigate on such sites; 2. Through Participatory Ergonomics, it was sought to conceive the Information Architecture of a university website: 2.2 By eliciting the users Mental Model with regard to the information organization and assemblage; 2.3 By knowing the navigation task and making the flow chart; 3. Through the Ergonomics Analysis of the Task, it was sought to assess the Information Architecture of the sites selected in the study of case; 4. With the Assessment of Specialists, the results of Step 2 methods were compared with the Information Architecture found in the universities websites selected as the study of case. The theory of the research has been confirmed, attesting that the Information Architecture solutions proposed by the developers do not facilitate the use of the system, where the user is not able to easily accomplish the desired task.