Database Proser

I’m in the process of redesigning a web site, and it has two form, using sessions to move data, then a summary page.

The summary page goes to the access database and the user is connected to paypal to make the payment

So far so good, the site works great up to this point.

But now I need to add a further form after the return from PayPal, the choices are cookies (which many people disable) or accessing the database.

But as the information is personal, I need to put in an extra form asking for name and a password, this then opens the last form populated by info from the database.

My problem is how to accomplish this as database work is something I’ve not really done before so any help would be appreciated.