In this paper, we present an integrated approach on finding experts for arbitrary user defined topics on the World Wide Web. We discuss the special challenges that come along with this issue and why solely applying standard techniques and standard tools like Web search engines is not suitable. We point out the necessity for a dedicated expert search engine, based on a Focused Crawler. The main contribution of our work is an approach to integrate standard Web search engines into the process of searching for experts to utilize the search engines' knowledge about content and structure of the Web.