Although knowledge is one of the most valuable resource of enterprises and an important production and competition factor, this intellectual potential is often used (or maintained) only inadequate by the enterprises. Therefore, in a globalised and growing market the optimal usage of existing knowledge represents a key factor for enterprises of the future. Here, knowledge management systems should engage facilitating. Because geographically far distributed establishments cause, however, a distributed system, this paper should uncover the spectrum connected with it and present a possible basic approach which is based on ontologies and modern, platform independent technologies. Last but not least this attempt, as well as general questions of the knowledge management, are discussed.