get XML sitemap module for your Drupal
http://drupal.org/project/xmlsitemap - XML sitemap
/admin/build/modules
enable
XML sitemap
XML sitemap node
/admin/settings/xmlsitemap/settings
Advanced settings
/admin/content/node-type/page?destination=admin%2Fsettings%2Fxmlsitemap%2Fsettings
XML sitemap
Inclusion:
Included
/admin/content/node-type/webform?destination=admin%2Fsettings%2Fxmlsitemap%2Fsettings
XML sitemap
Inclusion:
Included
/admin/settings/xmlsitemap/rebuild
Rebuild sitemap
Links
www.google.com/webmasters/tools - Google Webmaster-Tools