What is the contribution of Computer Supported Collaborative Learning (CSCL) technologies to the tutorial activity ? Do they lead to a significant change in the relationships between tutor and students ? between tutor and professor ? Do they contribute to renew the pedagogy ? This paper is based on an analysis of an action learning program on project management at the national school of information and library sciences (enssib). The first results of this on-going research give answers to some of these questions through the study of a corpus of interactions on 3 forums, and the representations given by the tutors of their own use of the variety of way they would communicate with the students or with their peer groups.