Sorry guys, its me again! I'm just learning php and seem to have problems with creating a login application using sessions. Can anybody help?

paste the code you have

<?
$username = $_POST['username'];
$password = $_POST['password'];
if(isset($username)){
$conn = mysql_pconnect("localhost","root","";
mysql_select_db("useraccount";
//$sql = ;
//echo "sql = $sql";
$result = mysql_query("SELECT * FROM userauth WHERE username = '$username' AND pswd = md5('$password')";
$rows = mysql_fetch_assoc($result);

if(is_array($rows)){
session_start();
$_SESSION['username'] = $rows['username'];
echo "do_login: name =".$_SESSION['username'];
//echo $rows['pswd'];
if($_GET['p']){
$page = $_GET['p'];
}else{
$page = "member.php";
}
//echo "page ".$page;
header("Location: ./$page";
}
else
{
header("Location: ./fail.php";
}
}


?>