mysql_fetch_assoc

$userM=$_SESSION['gid'];
$checkMSG="SELECT id,recipient,subject,body,emailed,sender,unread,folder FROM gid_msg WHERE recipient='$userM'";
$res=mysql_query(mysql_query);

while($fila = mysql_fetch_assoc($res)) {
echo $fila["subject"];
}


ERROR:
Warning: mysql_fetch_assoc(): supplied argument is not a valid MySQL result resource in *********** on line 11

My line 11 is:
while($fila = mysql_fetch_assoc($res)) {

What's wrong?
Regards:confused:

You should use die on this line
$res=mysql_query(mysql_query) or die(mysql_error());
and also you pass mysql_query to the mysql_query function which is incorrect. That line should be
$res=mysql_query($checkMSG) or die(mysql_error());

all solved. Thanks