PDF form on a website

Hello,

I have a PDF form that I use to collect data from customers. (Think of the form as a Request Form. e.g. request to order new products.) Currently, here is how the process works.

1. I have a form file on my company website. Customers download the PDF file to their computer and fill out the form.
2. After completing the form, a customer will click a submit button, which will ask a user for mailing application a user want to use to send email (if a customer has Outlook, the form will be sent by Outlook). if a user does not have outlook a user can save the form, then send it to us by free mail service (hotmail, yahoo....)

This process has a drawback that I would like to improve. I occasionally make change to the PDF form and reupload to a website. The problem I found is that some users do not go to a website every time they want to fill in the form. Sometimes they use the version that they save on their computers.

My idea is to have a form resides on the website, and a user can click submit button on the form and the form will automatically send the form back to my email address. Note that the submit button is still on the form, and not a part of a website. How can I setup the submit button so that it can send email to me without requiring a user to use email client (e.g. outlook).

I believe this way it will force a user to go to a website everytime. It also helps the problem that some users do not have email client on their computer.

thanks for suggestion and advice.
Boon