OsCommerce has been integrated with QTPRO and Paypal IPN.
QTPro is not functioning properly, it is not updating the stock attributes, however the overall stock is being updated.
The "Out of Stock" notification is not showing for the attributes in the store.
The cart needs coded to automatically empty, as of now the cart saves the previous cart items and adds them to the new cart when checking out.
An email order needs to be generated before the last step of the Paypal IPN process.
This OsCommerce store is on a test server with a sandbox account for the developer to ultilize.