Okay, I must be an idiot, because this is my 3rd question for today. Here's my code:

date_default_timezone_set("America/Los_Angeles");

include("mainmenu.php");

$con = mysql_connect("localhost", "root", "********");
 if(!$con){
  die(mysql_error());
}

$usrname = $_POST['usrname'];
$fname = $_POST['fname'];
$lname = $_POST['lname'];
$password = $_POST['password'];
$email = $_POST['email'];

mysql_select_db("`users`, $con) or die(mysql_error()");

$query = ("INSERT INTO `users`.`data` (`id`, `usrname`, `fname`, `lname`, `email`, `password`) 
VALUES (NULL, '$usrname', '$fname', '$lname', '$email', 'password'))");

mysql_query('$query') or die(mysql_error());

mysql_close($con);

echo("Thank you for registering!");

I always get the error returned as: "You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '$query' at line 1. Help a newbie. I'm about to stab my monitor.