PHP Guestbook Error Code

[bryanptcs]

I am using simple_guestbook php to do a very simple post to a mysql database.  I have the posting working, and it can retrieve the information, but when you submit the form the following error message comes up:

Warning: Cannot modify header information - headers already sent by (output started at /home/ww2palm/public_html/commentcard.php:7) in /home/ww2palm/public_html/commentcard.php on line 137

The following is the code for the php, excluding the database login info:

<form method="post" action="<?php echo $_SERVER['REQUEST_URI']; ?>">

    <p><label for="txtName">Name:</label><br />
    <input type="text" title="Enter your name" name="txtName" /></p>

<p><label for="rate">How would you rate us:</label><br />
  <input type="radio" name="rate" value="1">
1 <input type="radio" name="rate" value="2">
2 <input type="radio" name="rate" value="3">
3 <input type="radio" name="rate" value="4">
4 <input type="radio" name="rate" value="5">
5
<br>
</p>

    <p><label for="txtMessage">Your message:</label><br />
    <textarea title="Enter your message" name="txtMessage"></textarea></p>
   
    <p><label title="Send your message">
    <input type="submit" value="Send" /></label></p>
   
</form><?php

/**
* Create the table in your MySQL database:
*
* CREATE TABLE guests (
*   id int(10) NOT NULL auto_increment,
*   name varchar(50) NOT NULL,
*   message varchar(255) NOT NULL,
*   date timestamp(14) NOT NULL,
*   PRIMARY KEY (id)
* )
*
* Change the database login settings to your own
*
* The script is now ready to run
*/

// Change these to your own database settings

mysql_connect($host, $user, $pass) OR die ("Could not connect to the server.");
mysql_select_db($db) OR die("Could not connect to the database.");
     
$name = stripslashes($_POST['txtName']);
$message = stripslashes($_POST['txtMessage']);
$rate = stripslashes($_POST['rate']);

if (!isset($_POST['txtName'])) {

    $query = "SELECT id, name, rate, message, DATE_FORMAT(date, '%D %M, %Y at %H:%i') as newdate FROM guests ORDER BY id DESC";
    $result = mysql_query($query);
   
    while ($row = mysql_fetch_object($result)) {

?>

<p><strong><?php echo $row->message; ?><br />
<?php echo $row->rate; ?></strong>
<br />Posted by <?php echo $row->name; ?> on <?php echo $row->newdate; ?></p>

<?php
       
    }
   
?>

<p>Post a message</p>



<?php

}

else {

    // Adds the new entry to the database
    $query = "INSERT INTO guests SET message='$message', name='$name', date=NOW(), rate='$rate'";
    $result = mysql_query($query);

    // Takes us back to the entries
    $ref = $_SERVER['HTTP_REFERER'];
    header ("Location: $ref");
}

?>




THANK YOU FOR ANY HELP.

[BillyBoB]

this is supposed to be a bandaid but try puting this at the very beginning...

[code]
ob_start();
[/code]

[bryanptcs]

that didn't do anything

[bryanptcs]

my bad, i didn't have it in the right place.  Thanks.