Subscribe to 1ShopCart AR based on aMember Product??

I am not a programmer so bare with me...

The code below is from the site.inc.php file that tells 1shopping cart what AutoResponder to put the prospect in...

My question is how can I say... if product_id 5 place in AR #1 - - if product_id 6 place in AR #2?

Can anyone help me please.

Thanks in advance.

setup_plugin_hook("finish_waiting_payment", "fwp");
function fwp($payment_id){
global $db;
$payment = $db->get_payment($payment_id);
if($payment[product_id]!=5) return;
$user = $db->get_user($payment[member_id]);
$vars = array(
'merchantid' => 'xxxxxx',
'ARThankyouURL' => 'http://www.meetingwiththemasters.com/members/xxx.php',
'copyarresponse' => 0,
'defaultar' => '169982',
'requiredfields' =>'Name,Email1',
'visiblefields' => 'Name,Email1',
'Name' => $user[name_f]." ".$user[name_l],
'Email1' => $user,
'cmdSubmit' => 1
);
foreach($vars as $k=>$v){
$varsx[] = $k."=".urlencode($v);
}
$varsl = join("&", $varsx);
//print $varsl;
get_url("http://www.mcssl.com/app/contactsave.asp", $varsl);
}

?>

Jesse P. Jameson