This is a variation of Chemo's Google XML Sitemap Feed contribution, with the addition of some nice extras.
I specifically customized this set for those of you not using his Ultimate SEO contribution, but ARE using the default oscommerce search engine friendly URL's turned on, or a variation of the tep_html_link fuction in the /includes/functions/html_output.php page. The original contribution did not accomodate for these.
This is the full package with the addition of nice admin tools for easy access.
Anyone wanting to still use the default version, simply delete the /googlesitemaps/index.php and replace with the page called index.php.backup
You can alternatively also open the admin-install.htm and admin files to use just the admin tools with his contribution.
Full credit goes to CHEMO for the original contribution which this was based upon.