CDSEO has now been updated to include a built in XML SiteMap Generator module. Whereas external sitemap generators can spider your site for hours or even days using up valuable resources and sometimes resulting in search engines hitting incomplete sitemap files, CDSEO reads from your database and generates sitemaps in a matter of seconds. Among other features it can be automated with a cronjob and will automatically ping search engines informing them of the update. For details visit:
X-Cart SEO with CDSEO Pro