Translate an oscommerce class to Joomla VirtueMart

Hello, Maybe you already known oscommerce orders class, I need the same for Joomla VirtueMart. Object will called like this : $order = new order($my_orders_id); Required variables: $order->totals $order->info $order->customer $order->billing $order->delivery $order->products Take care, all required variables must have same names and formats than oscommerce. I need this class in order to make work my orders manager with Joomla VirtueMart without change existing scripts. This class must be delivered on Friday 15th. I'll select provider into 20 hours.