Google Sitemap

Hey everyone, I know that osCommerce had a Google Sitemap developed with a couple quick easy php files originally created by Bobby Easland at http://www.oscommerce-freelancers.com/. I tried installing them on my server, but then realized quickly the reason they weren't working is probably because the paths are incorrect. Anyone have the time or the know how on how to customize them to fit Open Cart? And would we also be able to make it compatible with grabbing the URL Alias for the search engines rather than the long query string?

The original files are on my site located at www.tbflashlights.com/GoogleSitemapCategories.php and www.tbflashlights.com/GoogleSitemapProducts.php

Thanks!