Embedded devices have been recently connected to the Internet, enabling their management and monitoring from the Web. Although Web interfaces can bring several advantages to embedded systems, from designers to end-users, re-designing legacy systems in most cases may not be the most effective way to upgrade a system to the Internet. In this paper, we present a hardware-software architecture for an embedded proxy agent to add Internet-awareness to an existing design. We also present an approach to add graphical user interfaces through the Web.