One of the basic requirements for education in the future is to prepare learners for participation in a networked, information society in which knowledge will be the most critical resource for social and economic development. Educational institutions are being forced to find better pedagogical methods to cope with these new challenges. In this development it is expected that computers could play an important role in restructuring teaching and learning processes to be better prepared for future challenges. Still in the late eighties most experiments on computer-supported learning were based on the so-called solo-learner model, and the opportunities to individualized learning processes were supposed to be the crucial feature of computers.