Alternate on E-mail Forms

Ok. I got the PHP and Flash to work fine, but what I am looking to do is have multiple message lines… which this seems to work:

$message =$_POST[“personname”];
$message .= $_POST[“number”];
$message .= $_POST[“address”];
$message .= $_POST[“birthdate”];
$message .= $_POST[“age”];
$message .= $_POST[“email”];
$message .= $_POST[“radioGroup”];
$message .= $_POST[“input”];

This works, but I get all the info lumped together in the e-mail. How do I get it to sepereate a little?

Question 2:

How do I have the system check to see if the e-mail is done correctly and if not, it gives an error… or something like that.

Any help would be great!!