Installation Issue

I'm having problems with Steph 2: Virtuemart Installation Applied

file websiteroot/administrator/components/com_virtuemart/classes/ps_coupon.php

unfortunatly the classses folder doesn't exist? Not sure of the work around.

What version of Virtuemart are you using? AwoCoupon is compatible with vm 1.1.x.

1.9.8c Just realized that It's Virtuemart 2 installed sorry