PHP - No me funciona mi formulario

function ver_video ($lid, $ttitle) {
(...etc etc etc.)

// comentarios
global
$adminpath,
$user,
$baseurl,
$admin,
$imagepath,
$prefix,
$font
;

include("$adminpath/config.php");

echo "<p align=\"left\"><font color=\"#CCCCCC\"><span style=\"font-size: 15pt; font-weight: 700\">
Comentarios</span></font></p>";

$result3 = mysql_query("select cid, lid, comment, date, name, member from $prefix"._videos_comments." where lid=$lid order by date ASC");
if (mysql_num_rows($result3) == 0) {
echo "<p align=\"center\"><font class=\"content\">No hay comentarios de este video.</font></p><br>";
}
else {

while(list($cid, $clid, $comment, $date, $name, $member) = mysql_fetch_array($result3)) {

$fecha = date("j-n-Y");
echo "<table border=\"0\" width=\"80%\" style=\"border-collapse: collapse\">";
echo "<tr><td width=\"77%\" bgcolor=\"#666666\">$name</td>";
echo "<td width=\"22%\" bgcolor=\"#666666\"><p align=\"right\">$fecha</td>";
echo "</tr><tr><td colspan=\"2\">$comment";

if (is_admin($admin))
echo "<a href=\"modules.php?name=Video&d_op=borrarcomentario&cid=$cid\" onClick=\"return confirm(\"¿Seguro?\")\"><img src=\"modules/My_eGallery/images/delete.gif\" border=\"0\" alt=\""._DELETE."\"></a>";

echo "<br><br></td></tr></table>";
}
}
//--- Fin Comentarios

//--- Insertar un comentario

echo "<p align=\"center\"><form action=\"modules.php?op=modload&name=Video&file=index\" method=\"POST\">";
echo "<input type=\"hidden\" name=\"do\" value=\"Post\">";
echo ""._GALNAME."<br>";
echo "<input type=\"text\" SIZE=\"20\" MAXLENGTH=\"20\" name=\"gname\">";
echo "<input type=\"hidden\" name=\"member\" value=\"0\">";
echo "<br>"._GALCOMMENT."<br>";
echo "<input class=\"textbox\" type=\"text\" name=\"comment\" size=\"70\" maxlength=\"70\"><br>";
echo "<input class=\"textbox\" type=\"hidden\" name=\"lid\" value=\"".$lid."\"> ";
echo "<input type=\"submit\" value=\"Post\">";
echo "</form>";
echo "<font class=\"option\">"._GALNOTE."</font></p>";

//--------------
echo "<br><br><center>";
downloadfooter($lid,$ttitle);
echo "</center>";
CloseTable();
include("footer.php");
}

function postcomment($lid, $comment, $gname, $member) {
global $prefix;

$comment = FixQuotes($comment);
$gname = FixQuotes($gname);
mysql_query("insert into $prefix"._videos_comments." values (NULL, '$lid', '$comment', now(), '$gname', $member)");
}



switch($d_op) {

case "ver_video":
ver_video($lid, $ttitle);
break;

case "borrarcomentario":
$sql = "DELETE from $prefix"._videos_comments." where cid=$cid";
mysql_query($sql);
echo "¡borrado comentario $cid!";
break;

case "Post":
postcomment($lid, $comment, $gname, $member);
header("Location: modules.php?op=modload&name=$name&file=index&do=showpic&lid=$lid");
exit;
break;

default:
index();
break;

}

lid es el ID de ver_comentarios
cid es el ID de cada comentario
comment el comentario
etc etc

si meto los comentarios directamente a la base de datos se me ve correcto
pero si meto los comentarios desde el formaulario que he hecho, no entran... que fallo hay?

um, rectifico lo ultimo que pone

lid es el ID de ver_video
cid es el ID de cada comentario
comment el comentario
etc etc

si meto los comentarios directamente a la base de datos se me ve correcto
pero si meto los comentarios desde el formaulario que he hecho, no entran... que fallo hay?