When customers click on the [submit] (or whatever you've named it) afterwards there often is a page that assures the customer that their form is being processed etc... this is a completely different page to that of the form they fill in.
e.g.
Your request is being processed...
When youre creating this page you should right click your mouse and go to "Page HTML" section rather than "Page Properties" and put the coding for the CONFIRMATION page there.
Then on the page the customers will fill in, right click your form section and go to "Form HTML" and put the coding for the form I sent you there and edit where necessary.
This should fix the prob. If not visit mine and see where you're going wrong...you can test my submit button for an example of the confirmation page I'm referring to.
http://www.rudesign.co.uk/booking.html