Easypopulate and admin modules for osCommerce

We need to export data from a oscommerce website and export to other oscommerce websites. 1) A file to export data as a [login to view URL], already have such file, need to arrange fields to make it ready for import to other sites. This file is on website 1. 2) A admin module, to take above export data (from website 1, needs to login), and import data into website 2. This module is located on website 2. Have check boxes what field is to be imported. The prices on website 1 is to be imported into 'buy price' on website 2. 3) a Admin module - List all categories, and have a margin rate. when press update, will calculate price from buy price + margin and update accordingly. also have a default margin if category margin is not specified. 4) A admin module - to update the pricing , after tax, to display .95, for example, say the item after tax is 28.47, update the sell price to 28.95. if 18.98, update to 18.95