¥ enter main site, pages that you are aware of, and make the spider search the site
¥ goto the edits page and change frequency etc
¥ Make changes then, click check box Save changes, then press Next or Previous or Goto to commit changes to server database.
¥ After changes are saved, click Make Site Map to get a google usable sitemap that you can use at google webmaster or other search engines that support the same format.