This should be a pretty quick and easy project. I will provide FLA file that will consist of four fields:
confirm email address
Form will have three states.
3. Error (email address entered do not match)
On submit a validation would occur verifying that both email fields are identical, if yes then proceed to process via PHP, if no, land on error frame. If successful, land on success frame.
Need from Winner:
PHP for form delivery
PHP for an auto-response (email sent to submitter based on email entered on the form)
ActionScript for FLA