Oscommerce Paypal IPN repost

I have running an oscommerce store. There has an problem on payment [login to view URL] buyer pay the order through paypal. There is no record shown of the transaction on my admin [login to view URL] I need to install paypal IPN for my oscommerce store. I want to view what item is my customer purchased. Also there has 2 pages need repair. 1. "Missing argument 2 for tep_get_zone_name() " in my [login to view URL] 2. "Backup directory does not exist. Please set this in configure.php." It's not massive work so I hope it can be done [login to view URL] also inform how soon you can [login to view URL]