help completing this code

[kiwis]

this is my checkuser.php page! I have a login.php page which has a textbox with username and password fields on it. Is this correct?

<?PHP 
mysql_connect (localhost, username,  password); 
mysql_select_db (Table); 

$result = mysql_query ("select username, password, access_level from Members where username = $username");

if(($username==$mysql_username) && $password ==$mysql_password) {  
setcookie("access_level",$mysql_access_level,time() + 3600);  
header("Location: page.php"); }  
else { header("Location: login.php"); }

let me know if it has any problems