Well i created a contact us script and added a captcha script to it... but unfortunately, It all went wrong:S:S:S For verifying if the code entered is similar to the one in the captcha image, the script used sessions:S However, each time i try it out i get this error: Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at D:\xampp\htdocs\WarZone\contact.php:12) in D:\xampp\htdocs\WarZone\captcha\captcha\captchac_lib.php on line 9 here is the whole code: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="content-type" content="text/html; charset=utf-8" /> <title>Warzone - Welcome to Wazone Paintball Arena.</title> <meta name="keywords" content="" /> <meta name="description" content="" /> <link href="default.css" rel="stylesheet" type="text/css" /> </head> <body> <div id="header"> <div id="logo"> <h1><a href="index.html">WarZone</a></h1> <h2><a href="http://www.freecsstemplates.org/">It's not a game...<br />It's a war.</a></h2> </div><a name="top"></a> <div id="menu"> <ul> <li class="first"><a href="index.php" title="Home">Home</a></li> <li><a href="about.php" title="About">About</a></li> <li><a href="games.php" title="">Games</a></li> <li><a href="packages_prices.php" title="">Packages/Prices</a></li> <li><a href="contact.php" title="">Contact</a></li> </ul> </div> </div> <!-- end #header --> <div id="page"> <div id="content"> <div class="boxed"> <h2>Contact us!</h2> <div class="content"> <p><form method='post' action='contact.php'><table width='457' border='0'> <tr> <td width='184'><strong>Full Name:</strong></td> <td width='263'><input type='text' name='name' value="<? echo $_POST['name'] ?>"/></td> </tr> <tr> <td><strong>e-mail:</strong></td> <td><input type='text' name='email' value="<? echo $_POST['email'] ?>"/></td> </tr> <tr><td>Choose:</td> <td><select name="degree"> <Option name="choice" value="1">Webmaster</option> <option name="choice" value="2">Information</option> <option name="choice" value="3">Feedback</option> <option name="choice" value="4">Comment</option> </select></td> </tr> <tr> <td><strong>Subject:</strong></td> <td><input type='text' name='subject' value="<? echo $_POST['subject'] ?>"/></td> </tr> <tr> <td><strong>Your Message:</strong></td> <td><textarea name='message' value="<? echo $_POST['message'] ?>"></textarea></td> </tr> <tr> <td><strong>Image Validator:</strong></td> <td><table cellpadding=5 cellspacing=0 bgcolor="#E4F8E4"> <tr> <td style="padding: 2px;" width="40em"><img src="captcha/captcha/captchac_code.php" id="captcha"><br><font color="#000000">Please enter the text from the image</font> </td></tr><tr> <td valign="top"><br><input type="text" name="Turing" value="" maxlength="100" size="10"><br> [ <a href="#" onclick=" document.getElementById('captcha').src = document.getElementById('captcha').src + '?' + (new Date()).getMilliseconds()">Refresh Image</a> ] [ <a href="captcha/captcha/captcha/whatisturing.html" onClick="window.open('captcha/captcha/whatisturing.html','_blank','width=400, height=300, left=' + (screen.width-450) + ', top=100');return false;">What's This?</a> ] </td> </tr> </table></td> </tr> </table><font color="#FF0000"> HTML: <?php include('captcha/captcha/captchac_lib.php'); $Turing_code = $_REQUEST["Turing"]; if ( CheckCaptcha($Turing_code) !=1 ) { echo "<b><font color=red>The Captcha Code you entered is invalid. Please press the Back button of your browser and try again</font></b><br>"; return 1; } ?> <? if (isset($_POST['submit'])) { $name = $_POST['name']; $email = $_POST['email']; $subject=$_POST['subject']; $message = $_POST['message']; if (empty($name) ) {echo "Please Type Your Name";} elseif(empty($email)) {echo"Please Type Your Email";} elseif(!preg_match("/^.+?@.+?\..+?/i" , $email)){echo"Please Type a Valid Email";} elseif(empty($subject)) {echo"Please Type the Subject";} elseif(empty($message)) {echo"Please Type Your Message";} elseif($_POST['choice']== 1){ $send=mail("webmaster@rz-group.com", $subject , $message, "FROM:" .$email);} elseif($_POST['choice']== 2){$send2=mail("info@rz-group.com", $subject , $message, "FROM:" .$email);} elseif($_POST['choice'] == 3){$send3=mail("feedback@rz-group.com" , $subject , $message, "FROM:" .$email);} elseif($_POST['choice'] == 4){$send4=mail("comment@rz-group.com" , $subject , $message, "FROM:" .$email);} elseif(!$send1 || !$send2 || !$send3 || !$send4){echo"Message Was Not Send... Try Again At a Later Time.";} else{echo"Message Sent Successfully";}} ?> PHP: </font> <br> <input type="submit" name="submit" /> </form> </p> </div> </div> </div> <!-- end #content --> <div id="sidebar"> <ul> <li> <h2>News & Events</h2> <dl> <dt><?PHP include('news.php') ; ?></dt> </dl> </li> <li> <h2>Voting Poll</h2> Here I'll put a voting poll... </li> </ul> </div> <!-- end #sidebar --> <div style="clear: both;"> </div> </div> <!-- end #page --> <div id="footer"> <p id="legal">Copyright © 2008 WarZone. All Rights Reserved. Designed by <a href="mailto:anthony.riachy@gmail.com">Anthony Riachy</a>.</p> <p id="links"><a href="#top">Top</a> | <a href="http://www.facebook.com/group.php?gid=14866987869">Facebook Group</a></p> </div> </body> </html> HTML: