how to after submit got to insert.php

how to after submit got to insert.php

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<!--
<?php
include_once 'common.php';
require_once("pages/validation.php");

?>
<?
if (!$_COOKIE["ln"]){
  $data['lang_ch']=$data['DefaultLanguage'];
  setcookie("ln", $data['lang_ch']);   
}
?>

-->
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
<title></title>
<meta name="keywords" content="" />
<meta name="description" content="" />
<link href="css/1.css" rel="stylesheet" type="text/css" />
</head>
<body>

<div id="header">
<!-- This is where the image of the house goes -->
</div>

<h1 class="main_title"><a href="#"></a></h1>

<? include ('pages/menu.php') ?>

<div id="container">
<div id="inner_container">
  <div id="content">

        <?if( isset($_POST['send']) && (!validateName($_POST['name']) || !validateEmail($_POST['email']) ||  !validateMessage($_POST['message']) ) ):?>
                <div id="error">
                    <ul>
                        <?if(!validateName($_POST['name'])):?>
                            <li><strong><?= $errorname?></strong> <?= $errorname1?></li>
                        <?endif?>
                        <?if(!validateEmail($_POST['email'])):?>
                            <li><strong><?=$errormail?></strong> <?=$errormail1?></li>
                        <?endif?>
                        <?if(!validateMessage($_POST['message'])):?>
                            <li><strong><?=$errormessage?></strong> <?=$errormessage?></li>
                        <?endif?>
                    </ul>
                </div>
            <?elseif(isset($_POST['send'])):?>
                <div id="error" class="valid">
                    <ul>
                        <li><strong><?=$congratulations?></strong> <?=$congratulations?></li>
                    </ul>
                </div>
        <?endif?>

        <form method="post" id="customForm" action="">
            <div>
                <label for="name"><?= $name; ?></label>
                <input id="name" name="name" type="text" />
                <span id="nameInfo"><?= $yourname; ?></span>
            </div>
            <div>
                <label for="email"><?= $email; ?></label>
                <input id="email" name="email" type="text" />
                <span id="emailInfo"><?= $yourmail; ?></span>
            </div>
            <div>
                <label for="pass1"><?= $group; ?></label>
                <input id="pass1" name="pass1" type="text" />
                <span id="pass1Info"><?= $yourgroup; ?></span>
            </div>
            <div>
                <label for="pass2"><?= $countrys; ?></label>
                <select name="country">
    <option value="AF">Afghanistan</option>
    <option value="AX">ÅLand Islands</option>
</select>
      </div>
            <div>
                <label for="message"><?=$message?></label>
                <textarea id="message" name="message" cols="" rows=""></textarea>
            </div>
            <div>
                <input id="send" name="send" type="submit" value="<?=$submit;?>" />
            </div>
        </form>
    </div>
    <script type="text/javascript" src="ajax/jquery.js"></script>
    <script type="text/javascript" src="ajax/validation.js"></script>
</body>
</html>
</div>

</div>
</div>

<div id="footer">

</body>
</html>

this is my code i use this teturial
http://yensdesign.com/2009/01/how-validate-forms-both-sides-using-php-jquery/

if all is ok .. how to go to insert.php to insert the database
sorry for my english

and thank you for your time!