getting content with fput, SESSIONS and frames

Hi Guys, i wanna get some content from an other website with a sessionid and a frameset. my starting code looks like this: <?PHP $fp = @fopen("http://domain.tld/frameset.php?q=string", "r"); if($fp){ while($in = fread($fp, 1024)) $reply .= $in; echo ("$fp\n\n"); echo ("$reply\n\n"); fclose($fp); } ?> now i got in $replay a frameset that links to the main.php without the session id. the paket header including the forward looks like this: HTTP/1.1 302 Found Date: Mon, 26 Jan 2004 11:38:51 GMT Server: Apache X-Powered-By: PHP/4.3.1 Location: http://domain.tld/c17c340a3e6a2cb268451f3eda5930ce/frameset.php?q=string Expires: Thu, 19 Nov 1981 08:52:00 GMT Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0 Pragma: no-cache Connection: close Content-Type: text/html now i'm looking for a method to get the location into a $var to extract the sessionid any ideas for that? regards