Virtual Learning Environments (VLEs) that support collaboration are one of the new technologies that have attracted great interest. VLEs are learning management software systems composed of computer-mediated communication software and online methods of delivering course material. This paper presents ELearn, a collaborative VLE for teaching e-commerce that has been developed using Active Worlds. A virtual school was constructed using an environment that integrates the appearance of the virtual world, the Web pages that are connected with specific objects in the world, and the capability of synchronous chat among the users. Collaboration and interaction were two of the most significant matters taken under consideration, due to their important role in the educational procedure. An evaluation of the environment is also included, with regard to specific criteria that were developed for evaluating VLEs. (Contains 20 references.) (Author)