Update multiple fields of a mysql database using a php form

I want to to pull all fields from a row in my table into a form, update them, and post them back to the database. This is what I have, everything from my table row is pulling into the form but when I update I get undefined variable for $row.

<?php
include("header.php");
include("config.php"); 
if( isset($_GET['edit']))
{
        $id = $_GET['edit'];
        $result= mysql_query("SELECT * FROM customers");
        $row= mysql_fetch_array($result);
}
if ( isset($_POST['id'], $_POST['fName'], $_POST['lname'], $_POST['telNum'], $_POST['address'], $_POST['city'], $_POST['state'], $_POST['zip'], $_POST['email'], $_POST['service'], $_POST['notes']))
{
    $id = $_POST['id'];
    $fName = $_POST['fName'];
    $lName = $_POST['lName'];
    $telNum = $_POST['telNum'];
    $address = $_POST['address'];
    $city = $_POST['city'];
    $state = $_POST['state'];
    $zip = $_POST['zip'];
    $email =$_POST['email'];
    $service = $_POST['service'];
    $notes = $_POST['notes'];
    $sqlFn = "UPDATE customers SET fName = $fname WHERE id = $id";
    $sqlLn = "UPDATE customers SET lName = $lName WHERE id = $id";
    $sqlTelNum = "UPDATE customers SET telNum = $telNum WHERE id = $id";
    $sqlAddress = "UPDATE customers SET address = $address WHERE id = $id";
    $sqlCity = "UPDATE customers SET city = $city WHERE id = $id";
    $sqlState = "UPDATE customers SET state = $state WHERE id = $id";   
    $sqlZip = "UPDATE customers SET zip = $zip WHERE id = $id";
    $sqlEmail = "UPDATE customers SET email = $email WHERE id = $id";
    $sqlService = "UPDATE customers SET service = $service WHERE id = $id";
    $sqlNotes = "UPDATE customers SET notes = $notes WHERE id = $id";
    $result = mysql_query($sqlFn, $sqlLn, sqlTelNum, sqlAdress, sqlCity, 
                          sqlState, sqlZip, sqlEmail, sqlService, sqlNotes)
                          or die("Could not update".mysql_error());
        echo "<meta http-equiv='refresh' content='0;url=viewClients.php'>";
}

?>

<form action="edit.php" method="post">
    <div class="CSSTableGenerator" >
<table> 
    <tr>
    </tr>
    <tr>
        <td>ID:</td>
        <td><input type="text" name="id" value="<?php echo $row[0]; ?>"></td>
    <tr>
        <td>First Name:</td>
        <td><input type="text" name="fName" value="<?php echo $row[1]; ?>"></td>
    </tr>
    <tr>
        <td>Last Name:</td>
        <td><input type="text" name="lName" value="<?php echo $row[2]; ?>"></td>
    </tr>
    <tr>
        <td>Telephone #:</td>
        <td><input type="text" name="telNum" value="<?php echo $row[3]; ?>"></td>
    </tr>
    <tr>
        <td>Street Address:</td>
        <td><input type="text" name="address" value="<?php echo $row[4]; ?>"></td>
    </tr>
    <tr>
        <td>City:</td>
        <td><input type="text" name="city" value="<?php echo $row[5]; ?>"></td>
    </tr>
    <tr>
        <td>State:</td>
        <td><input type="text" name="state" value="<?php echo $row[6]; ?>"></td>
    </tr>
    <tr>
        <td>Zip:</td>
        <td><input type="text" name="zip" value="<?php echo $row[7]; ?>"></td>
    </tr>
    <tr>
        <td>Email:</td>
        <td><input type="text" name="email" value="<?php echo $row[8]; ?>"></td>
    </tr>
    <tr>
        <td>Service:</td>
        <td><input type="text" name="service" value="<?php echo $row[9]; ?>"></td>
    </tr>
    <tr>
        <td>Notes:</td>
        <td><input type="text" name="notes" value="<?php echo $row[10]; ?>"></td>
    </tr>
</table>
</div>
<div class="CSSTableGenerator" >
<table>
    <tr>
        <td><input type="submit" value="Update"/></td>
    </tr>
</table>
</div>
</form>

Also each of these edit links is only pulling data from the primary key in the first row. I want the edit link in the last column of each row to pull from the primary key in the first column of each row.

    <?php
include("header.php");
include("config.php"); // connect to database

mysql_query("INSERT INTO customers (id, fName, lName, telNum, address, city, state, zip, email, service, notes)
VALUES ('$_POST[id]', '$_POST[fName]', '$_POST[lName]', '$_POST[telNum]', '$_POST[address]', '$_POST[city]', '$_POST[state]', '$_POST[zip]', '$_POST[email]', '$_POST[service]', '$_POST[notes]')")
    or die(mysql_error());
$id = $_POST['id'];
$fName = $_POST['fName'];
$lName = $_POST['lName'];
$telNum = $_POST['telNum'];
$address = $_POST['address'];
$city = $_POST['city'];
$state = $_POST['state'];
$zip = $_POST['zip'];
$email = $_POST['email'];
$service = $_POST['service'];
$notes = $_POST['notes'];


echo "<h1>New Client Added</h1>";
echo <<<HTML
<html>
<head>
<link rel ="stylesheet" type="text/css" href="sample.css"/>
<link rel ="stylesheet" type="text/css" href="TableCSSCode.css"/>
</head>
<body>
<div class="CSSTableGenerator">
<table> 
    <tr>
        <td>ID</td>
        <td>First Name</td>
        <td>Last Name</td>
        <td>Telephone #</td>
        <td>Street Address</td>
        <td>City</td>
        <td>State</td>
        <td>Zip</td>
        <td>Email</td>
        <td>Service</td>
        <td>Notes</td>
    </tr>
    <tr>
        <td>$id</td>
        <td>$fName</td>
        <td>$lName</td>
        <td>$telNum</td>
        <td>$address</td>
        <td>$city</td>
        <td>$state</td>
        <td>$zip</td>
        <td>$email</td>
        <td>$service</td>
        <td>$notes</td>
    </tr>

</table>
</body>
</html>
HTML;


?>

Forgive me if this is a mess, I'm totally new to coding, I'm doing this for a project in an application program development class and my Prof. doesn't really seem to know what she is teaching. Thanks in advance.