ASP PHP Project - Create records in MySQL db from code

We currently have a classic ASP shopping cart (ProdutCart by Early Impact) which we use to sell products. (this runs on a windows box) We recently purchased a new product: ppSD2 by Ascad Networks We will be using the ppSD2 to manage our Subscriptions that are purchased using our shopping cart. (this code is in php and on a Unix box on the same network our windows box is on) ** ppSD2 will help us when our customers subscriptions are going to renew - so we need the customers info, billing info and credit card info moved to the new system for renewals. During the checkout, the code will check to see if 1 particular product was purchased. If it was, it will run the code discussed in this project. We need code that will create records either during the checkout process in the ASP cart or after by pulling data from the MSSQL database and putting it in the MySQL database. There is some encryption/decryption involved for the credit card information which is what makes this a little difficult for us. Also, the data has to be written to multiple tables in the MySQL database. I am creating a test copy of the ppSD2 system that you will be able to work with. Not sure how we are going to handle the asp shopping cart part as its live.