Using osCommerce for monthly billing

[julia]

I know there are contributios to export osCommerce data to quickbooks, but it would be nice if there was a way to transfer orders from quickbooks into osCommerce.

If you want to charge say...for tennis lessons...

the customer could log into their account...see what their account balance is (shopping cart) , and pay online through authorize.net.

Does this exist anywhere, or has anyone found another way of accomplishing this with oscommerce??

Thanks

Julie