OSCommerce Mods and Fixes

I need someone experienced with Oscommerce to make some changes and additions, as well as troubleshoot/fix some issues that we are having. Issues that need to be fixed: - Current USPS shipping mod is not working correctly. Shipping prices are not being transfered to Paypal payment. International shipping will not calculate. I also want the USPS shipping options to show in conjunction with the free shipping option on the [login to view URL] page. - Orders made using credit card as the payment option are not showing up in the customers account, when they are viewing the site in English. The orders are properly logged in admin and they can be viewed in the customers account in other languages, but not if the customer is viewing the site in English. - When multiple items are added to the cart, the product attributes are duplicating. Item 1 will show correct attribute, Item 2 will show attribute from Item 1 and correct attribute from Item 2. See attached screenshot. I would also like to add the following functions/mods: - Coupon code mod - Product quantities for attributes (when a size sells out of the quantity set, that option is no longer shown. When an item sells out of all quantities, "Add to Bag" button is replaced with "Sold Out" button) - Show order numbers in admin - When a customer leaves a review, I want only first name displayed publicly. I can explain each of these items in more detail, as well as provide screenshots and examples of what I need. I'm also looking for someone that I can hopefully use on a regular basis. Thank you!