Passing Variables through URLs / Updating MySQL Database

[Farmernate]

I'm having a problem with an ezine script. I wrote the script so that it sends confirmation emails along with a customized confirmation url that they can go to to confirm. The script simply changes "0" to "1". The url I am using is

http://www.mysite.com/confirm.php?code=m3ny4t36

confirm.php contains:

<? 
include("/config.php"); 
?> 

<?
         if(isset($_GET[code])) {
             if(mysql_query("SELECT * FROM "maileremail" WHERE code='"$_GET[code]"'")) {
                 mysql_query("UPDATE "maileremail" SET active = '1' WHERE code = '"$code"'");
                 echo "Thank you for confirming, you are now added to the list";
             } else {
                 echo "You have the wrong code or id, please double check";
             }
         } else {
             echo "Please use the link in email to confirm your subscription";
         }
         break;
?>

I probably just made a simple mistake as I am new to php but if anyone could check the code out and see what's wrong, I would appreciate it.

[LordShryku]

mysql_query("UPDATE "maileremail" SET active = '1' WHERE code = '"$code"'");

Think that should be $_GET['code'].
Also, the double quotes around the table name are not neccesary. I fact, most DB's won't accept them.