This is a quick and dirty hack to make QT Pro Attribute selection available in STS Product Info Templates.
It basically replaces the built in placeholder $optionnames and $optionchoices with a new one called $QTattrib which renders the QT Pro Attribute Selection.
You can than use this placeholder in a product_info.php.html file to show the QT Pro Attribute Selection.
osCommerce MS2 - http://www.oscommerce.com/
Quantity Tracking Professional - QT Pro:
Simple Template System - STS PLUS v4.1:
(or - not tested: Simple Template System - STS: