<configuration>
   <system.web>

      <siteMap defaultProvider="MyXmlSiteMapProvider" enabled="true">
         <providers>
            <add name="MyXmlSiteMapProvider"
             description="SiteMap provider that reads in .sitemap files."
             type="System.Web.XmlSiteMapProvider, System.Web, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"
             siteMapFile="AnotherWeb.sitemap" />
         </providers>
      </siteMap>

   </system.web>
</configuration>
