In the framework of Knowledge Management, the Internet can be a valuable source of information to produce new Knowledge. Here, an ontologybased web search system to ease the enterprise managers in the process of discovering new knowledge from the documents in the Internet is introduced. By means of a graphical user interface, the user of the system supplies an ontology in RDF to describe the domain of interest, and sets up some predefined parameters in order to constrain the search corpus. A distributed intelligent process works to achieve the levels of quality and quantity about the results that the user established. Several ideas about how to use this system and its application to seven real domains are also supplied.