or find this bit and then just add in more pages which means you can switch them on or off with the setting in general settings
Code:
$https_scripts[] = "secure_login.php";
if ($config["General"]["use_https_login"] == "Y") {
$https_scripts[] = "register.php";
$https_scripts[] = "registration.php";
$https_scripts[] = array("cart.php", "mode=checkout");
$https_scripts[] = array("cart.php", "mode=auth");
}
So just add extra $https_scripts[] = "XXXXXXX.php"; in