User-to-User Communication within Internet-based 3D Virtual Environments is usually difficult mainly due to the trade-off between the capability and the complexity of the interface. In this paper we make a proposal for interface management based on the delegation of some communication tasks on Intelligent and Emotional Agents. 1 Believability, Usability and Delegation We can probably place the continuous and successful growth of the Internet on the easiness it provides to share information, and the enhancement it supposes in human communication. On this respect, communication over the Internet has become more and more sophisticated as the technology has evolved. A text-based chat line has been good enough for a long time for synchronous communication, given that technology only allowed fast text interchange. Obviously, a picture is worth a thousand words, and the increase in the line bandwidth allows complementing the written message with 2D and even 3D content. The natural evolution o...