This addon is a replacement for the previous MATC module. It is fully compatible with all community edition versions of oscommerce but it does require raiwa's modular checkout pages addon to be installed..
Once installed, it will place a check box on the create account, checkout payment or checkout confirmation pages, depending upon the settings in the module. The check box prevents the customer from proceeding unless they check that box.
If the check box is to appear on the create account page, a few file edits are requited. Otherwise, it all works with the installation of modules.