Authorize dot net ARB in OSCommerce

Modify the osCommerce [login to view URL] contribution to allow Automated Recurring Billing transactions to be passed through to Authorize.net. Requirements for vendor: Responses are accepted ONLY from programmers who have already implemented ARB with [login to view URL] in osCommerce for another client. NO OTHER VENDORS will be accepted. In order to qualify for this project please provide the following information in your response. If you cannot provide this information, please do NOT respond to this project. 1. Provide the URL of your client's website where you did ARB with [login to view URL] on an osCommerce installation. I need to see a product or service being sold on a recurring billing scheme. 2. List the php files you changed in order to implement the ARB feature. 3. Indicate what new tables you added to the osCommerce database, and if you had to modify any existing tables. 4. Describe how you dealt with security issues of storing credit card data.