Creating a "confirm.php" for contact/order form

Hi,

I am working on a simple order form that has these steps:
1. order form (with "place an order" button)
2. confirmation page (with "submit" button)
3. order email to us and copy of order form to a customer.

The site is static, and this is just a temporary thing, so I am simply extending a contact form to an order form (meaning a customer has to type in the product name and how many they want.)

So I started out with making a contact form using Form Builder, by adding form elements.
It seems the Form Builder has no function to make confirm.php automatically, so I searched through the forum, then I found below suggestion in one thread;

showthread.php?t=7584&highlight=confirm+page

So I did what exactly this suggestion said (I also created a file called "confirm.php".)
But I'm not really sure if this is the way to do for me.

At the moment "confirm.php" is not showing anything.
I assume "place an order" button needs to be fixed as it is still the same as when I first made this order form as a contact form with Universal Email function.

Any suggestion?