In Sliding Cart, where do I store my customer details?

I can see my products in the cart. But where do I store the customer information like addresses etc.

Hello Alan,

When the clients clicks the checkout button, they are redirected to PayPal website, where after entering the login details they can add/edit/select their Shipping address.

Alan,
The customer's data is passed to PayPal. You'd need to login to your paypal account to retrieve the customer's data.

Is there any way to automatically have the customer information and shopping cart contents passed back to my web site? I need this in order to update inventory.

Is there any way to automatically have the customer information and shopping cart contents passed back to my web site? I need this in order to update my database and start triggers in it to sent mails etc. maybe the Behaviors in the SlidingPaypal has an option therefore?????