Точку забыл.
<?php
$packet.="POST /enter.php HTTP/1.0\r\n";
$packet.="Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, application/pdf, application/x-shockwave-flash, */*\r\n";
$packet.="Accept-Language: ru\r\n";
$packet.="Content-Type: application/x-www-form-urlencoded\r\n";
$packet.="Host: web.tak.ru\r\n";
$packet.="Content-Length: 52\r\n";
$packet.="Pragma: no-cache\r\n";
$packet.="Connection: Keep-Alive\r\n\r\n";
$packet.="login=freetest&password=ANTICHAT&Submit= ++OK++&z=enter_form";
$ock=fsockopen("web.tak.ru",80);
fputs($ock,$packet);
$html='';
while (!feof($ock))
{
$html.=fgets($ock);
}
fclose($ock);
echo $html;
?>