How to get my email form working?

Hello,
I’ve found several posts / threads on creating email forms. I uploaded both the Kirupa email form and another email form from

Neither worked for me and the only thing I changed was the email address. Wondering how to test why the email’s not getting to me? Am I forgetting something?
Anyone help me get either working, please??

http://developdesign.com/samples/phpflashmail/Kirupa_flash_php_email.html
Actionscript on flash button:

on (release) {
     // send variables in form movieclip (the textfields)
     // to email PHP page which will send the mail
     form.loadVariables("email.php", "POST");
 }

PHP code

<?php
/***************************************************\
 * PHP 4.1.0+ version of email script. For more
 * information on the mail() function for PHP, see
 * http://www.php.net/manual/en/function.mail.php
\***************************************************/


// First, set up some variables to serve you in
// getting an email.  This includes the email this is
// sent to (yours) and what the subject of this email
// should be.  It's a good idea to choose your own
// subject instead of allowing the user to.  This will
// help prevent spam filters from snatching this email
// out from under your nose when something unusual is put.

$sendTo = "jonathan@developdesign.com";
$subject = "My Flash site reply";

// variables are sent to this PHP page through
// the POST method.  $_POST is a global associative array
// of variables passed through this method.  From that, we
// can get the values sent to this page from Flash and
// assign them to appropriate variables which can be used
// in the PHP mail() function.


// header information not including sendTo and Subject
// these all go in one variable.  First, include From:
$headers = "From: " . $_POST["firstName"] ." ". $_POST["lastname"] . "<" . $_POST["email"] .">
";
// next include a replyto
$headers .= "Reply-To: " . $_POST["email"] . "
";
// often email servers won't allow emails to be sent to
// domains other than their own.  The return path here will
// often lift that restriction so, for instance, you could send
// email to a hotmail account. (hosting provider settings may vary)
// technically bounced email is supposed to go to the return-path email
$headers .= "Return-path: " . $_POST["email"];

// now we can add the content of the message to a body variable
$message = $_POST["message"];


// once the variables have been defined, they can be included
// in the mail function call which will send you an email
mail($sendTo, $subject, $message, $headers);

?>

Second tutorial: http://www.layoutgalaxy.com/html/htmnewletter55-page2.htm
http://developdesign.com/samples/phpflashmail/form.html

Actionscript code

stop();
// Making the default setting for below mentioned textfields
name = "";
email = "";
suggestion = "";
//
//-------------------------------------------------------
// Submit Button action
submit.onRelease = function() {
    //Add Path of the php file
    feedbackpath = "mailto.php";
    //
    str1 = email.indexOf("@");
    str2 = email.indexOf("@")+1;
    str3 = email.charAt(str1+1);
    str4 = email.lastIndexOf(".");
    str5 = email.charAt(str4+1);
    len = length(email);
    counter = 1;
    flag = 0;
    while (Number(counter)<=Number(len)) {
        Char = substring(email, counter, 1);
        if (Char ne "@") {
            flag = Number(flag)+1;
        }
        counter = Number(counter)+1;
    }
    //
    //Name field validation
    if (name == "") {
        condition1 = "";
        namemark._visible = true;
    } else {
        condition1 = "ok";
        namemark._visible = false;
    }
    //E-Mail Address validation
    if (str4<=str2 || str3 == "." || str5 == "" || Number(flag) != Number(len-1)) {
        condition2 = "";
        emailmark._visible = true;
    } else {
        condition2 = "ok";
        emailmark._visible = false;
    }
    //Suggestion field validation
    if (suggestion == "") {
        condition3 = "";
        suggestionmark._visible = true;
    } else {
        condition3 = "ok";
        suggestionmark._visible = false;
    }
    //Sending data to php file only if all the above validations are fulfilled
    if (condition1 == "ok" && condition2 == "ok" && condition3 == "ok") {
        loadVariablesNum(feedbackpath+"?name="+name+"&email="+email+"&feedback="+suggestion, 0);
        gotoAndStop(2);
    }
};
//
//-------------------------------------------------------
// Reset Button action
reset.onRelease = function() {
    // Making the default setting for below mentioned textfields
    name = "";
    email = "";
    suggestion = "";
    // Making '*' Marks Invisible
    namemark._visible = false;
    emailmark._visible = false;
    suggestionmark._visible = false;
};

PHP code

<?
//Destination Email ID
$to = "jonathan@developdesign.com";

//Name of the Person
$namenew = $_GET['name'];    
  
//Email Id of the person
$emailnew = $_GET['email'];      

//Feedback detail
$feedbacknew = $_GET['feedback']; 

//Subject line of the email
$subject = "Feedback Form"." "."$emailnew";  

/*********** Email body *******************/
$matter = "Below are the details filled by"." "."$namenew"."

".  
      "Name:"." "."$namenew"."

".
      "Email:"." "."$emailnew"."

".
      "Suggestion:"." "."$feedbacknew"."

";
/**********************************************/       
       

mail("$to", "$subject","$matter","From: $emailnew");

?>