transfer session id

Hi, I have following code in my script. <? session_start(); header("Location:nextpage.php?username=$username&=SID"); ?> This is supposed to start a session and take me to nextpage.php but it does not transfer the session name and id in the url and if I have cookies off then I cannot see my session id. I have also tried it without "&=SID" but still it doesnt work. If I have a plain html tag like. <a href="nextpage.php>nextpage</a> Then it will automatically add the session id to the url without the need of <? =SID ?>. I have compiled php with --enable-trans-sid. Isnt is suppose to transfer the id regardless of weather cookies is on or off?? I am using PHP 4.0.0 on apache ver 1.3.9 SuSE linux 6.3. I need the session id to be transferred using the header function to account for cookie less browsers. Thanks in advance. Vikash.