osCommerce: Orders import from Paypal Text File Bug Repair

we have already have a script which can insert the orders in Tab-delimited file (downloaded from paypal). It works OK but we find out there are two issues: 1. when a customer order two or more products and paid for both in one go, then it will only insert the first product, and ignore the remaining 2. the tax (VAT) was hard coded into the script instead of using the region tax rate table in the database. The script is attached and a sample tab-delimited file is also included