Semantic Web is emerging and maturing as a powerful extension of today's Web. In this environment, both humans and machines (like agents) can exchange data more efficiently. The shared understanding of this environment is based on an ontology backbone, used to model semantics and relations between various concepts. The e-learning domain is one of many domains that can benefit from the Semantic Web advantages. In this paper, the authors survey a number of adaptive e-learning systems and analyze the components and needs of adaptive e-learning systems using the Semantic Web environment.