custom PHP submit contact application form

Hi I'm trying to upgrade a static html site to drupal. I am having trouble copying this php form to drupal. I went to create content and selected PHP code and just copied and paste this page.

http://chinatownicecreamfactory.com/employment.php

Everything shows up, but when i click on the submit button under drupal nothing happens. Its as if the php never gets run.

What am i doing wrong here? My code is below:

< ?
if ($action == "Send")
{
$message_body = "the body of the message....";

if(empty($name) OR empty($email) OR empty($address) OR empty($age)) {
echo "Please go back and fill in all the information.


<-- Go Back";
die();
}
elseif(!strstr($email,"@") || !strstr($email,".")) {
echo "Please enter a valid email address.


<-- Go Back";
die();
}
else {
mail("", "Employment Application", "$message_body","From: $name <$email>");
echo "Your message has been submitted!


Return to Chinatown Ice Cream Factory";
die();
}
}
?

Thanks,
Pat