Drupal: Add XML Sitemap

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