Help positioning an echo or die where I want it?

This might sound a like a silly question but how do I control where a PHP form prints and echo or die statement?

I currently have a block of code which checks for the existence of a username in my database, everything is working fine but I would like to error ""Username already exists to print below the submit button when there is an error instead of on a new page. I might be over thinking things but I can't seem to figure it out.

<?php
$submit = $_POST['submit'];

//form data
$fullname = strip_tags($_POST['fullname']);
$username = strtolower(strip_tags($_POST['username']));
$password = strip_tags($_POST['password']);
$repeatpassword = strip_tags($_POST['repeatpassword']);
$date = date("Y-m-d");

if ($submit)

{
// Connect to the database
$connect = mysql_connect("localhost","root","") or die ("Couldn't connect");
 mysql_select_db("rentals") or die ("Couldn't find database");
 
 $namecheck = mysql_query("SELECT username FROM users WHERE username='$username'");
 $count = mysql_num_rows($namecheck);
 
 if ($count!=0)
 
 {
 die("Username already exists!"); // This wants to be displayed further down
 }
 

// Check for existance
if ($fullname&&$username&&$password&&$repeatpassword)
{

if ($password==$repeatpassword)

{
if (strlen($fullname)>25 || strlen($username)>25)
{
echo "The maximum length of fullname / username is 25 characters.";
}

else

{
// Check password length
if (strlen($password)>25 || strlen($password)<6)
{
echo "Password must be between 6 and 25 characters long";
}
else
{
// Register the user

// Encrypt password
$password = md5($password);
$repeatpassword = md5($repeatpassword);
 
$queryreg = mysql_query("INSERT INTO users VALUES ('','$fullname','$username','$password','$date')");

header('location: registration_success.php');

}

}

}
else
echo "Your passwords do not match!";

}

else

echo "Please fill in all fields.";

}

?>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<link rel="stylesheet" type="text/css" href="css/stylesheet.css">
<title></title>
</head>

<body>
<div id="wrapper">
 <div id="container">
 <div id="header">
<div id="user_box">
 </div>
 </div>
 <div id="navigation">
 <ul>
 <li><a href="css/index.php">Home</a></li>
 </ul>
 </div>
 <div id="spacer_horizontal"></div>
 <div id="left_panel"><img src="images/feather-left-side-banner.jpg" width="152" height="495" /></div>
 <div id="centre_panel">
 <?php echo "<h1>Register</h1>"; ?>
 <form action="register.php" method="POST">
 <table>
 <tr>
 <td>
 Your full name:
 </td>
 <td>
 <input type="text" name="fullname" value="<?php echo $fullname; ?>">
 </td>
 </tr>
 <tr>
 <td>
 Choose a username:
 </td>
 <td>
 <input type="text" name="username" value="<?php echo $username; ?>">
 </td>
 </tr>
 <tr>
 <td>
 Choose a password:
 </td>
 <td>
 <input type="password" name="password">
 </td>
 <tr>
 <td>
 Repeat your password:
 </td>
 <td>
 <input type="password" name="repeatpassword">
 </td>
 </tr>
 </tr>
 </table>
 <p>
 <input type="submit" name="submit" value="Register"/>
 </div>
 <div id="right_panel"><img src="images/feather-right-side-banner.jpg" width="152" height="495" /></div>
 </div>
 <div id="spacer_horizontal_bordered_top"></div>
 <div id="bottom_panel">
 <ul>
 <li><a href="css/index.php">Home</a></li>
<li><a href="#">Search</a></li>
 </div>
 <div id="spacer_horizontal_bordered_bottom"></div>
<div id="footer">
Web Design Services<br />
 <a href="http://jigsaw.w3.org/css-validator/check/referer" class="nav">W3C Compliant CSS</a> | <a href="http://validator.w3.org/check?uri=referer" target="_blank" class="nav">W3C Compliant XHTML</a><br />
 <?php 
echo date("l, dS F Y, h:ia" ,time()); 
?>
 </div>
</div>
</body>
</html>

Help positioning an echo or die where I want it?

Jamier101

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Jamier101

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