The HTML template for the BTS is targetted at users that have the BTS pre-installed but, for whatever reason, would rather edit an HTML template (in stead of a PHP enabled template).
requires at least the BTSv1.5x (=> any BTSv.1.5 version will do) to be installed
affected files: none (drop in template)
estimated time needed for installation: < 1 minute
It's an STS alike addon, it even uses the same tag names as much as possible, so (hopefully) switching and converting templates between the two will be easy.
feedback & support: http://forums.oscommerce.com/index.php?showtopic=146868