Ok, so I started using the header code that was suggested:

And I get this error:

Parse error: parse error, unexpected '{' in
/home/char-lee/public_html/beta/1.php on line 3

This is the code:
-----------
<?php
if ($_POST['pw'] != burgers
{
header("Location: password.php");
}
else
{
header("Location: sept-coupon07.html");
}
?>
-----------