Sessions thru MySQL [bumped]

[tet3828]

I have this small script here. It has me pretty confused. I have a mysql table 'users'. I've stored these values for one user:
userPass (password)
userName (user login ID)
userFirst(users first name)
along with some other valuse that have no bearing on my question...

any way I am using a flash projector that is using $_GET to pass the userName and userPass over to the following script.

[code]
if (! isset($_SESSION['name'])) {

if(isset($_GET['userName']))
{
$userName = $_GET['userName'];
$userPass = $_GET['userPass'];
mysql_connect("mysql213.secureserver.net","*****","*****");
mysql_select_db("shell3828");

$query = "SELECT nameFirst FROM users WHERE userName='$userName' AND userPass='$userPass'";
$result = mysql_query($query);
if (mysql_numrows($result) == 1)
{
$_SESSION['name'] = mysql_result($result,0,"nameFirst");
$_SESSION['username'] = mysql_result($result,0,"userName");

echo "You're logged in.";
}
} else {
echo "You must enter a password/username before accessing this page. Please launch LOGIN.EXE from your desktop.";
}
} else {
$userName = $_SESSION['name'];
echo "Welcome back $Username";
}
[/code]

The problem is when I log on with the correct password and user name I get this warning....

[code]
Warning: mysql_result(): userName not found in MySQL result index 2 in /home/content/t/e/t/tetunity/html/shell/data/index.php on line 19
You're logged in.      \\\but it does log the user in.

[/code]

to make this more confusing... when I log in with the incorrect login information it goes to my "welcome back" echo.
however when I attempt to login with no information it does display the "You must enter a password/username before accessing ...." echo message.

any suggestions on how I can get this script properly? Where did I go wrong here?

[tet3828]

*bump* help if you can. thanks