In this paper, we will describe work in progress at the MITRE Corporation on embedding speech-enabled interfaces in Web browsers. This research is part of our work to establish the infrastructure to create Web-hosted versions of prototype multimodal interfaces, both intelligent and otherwise. Like many others, we believe that the Web is the best potential delivery and distribution vehicle for complex software applications, and that the functionality of these Web-hosted applications should match the functionality available in standalone applications. In this paper, we will discuss our approach to several aspects of this goal.