Zen Cart API integration

I need to integrate an API with the supplier's site using XML. I have complete documentation from the supplier for the technical part. 1) stock check - collect model number and send an xml request to supplier in real time. Requests should go from product_info page and shopping_cart page. Depending on return code, product should be displayed as "in stock" or "out of stock" 2) ordres integration - each successfull order has to be instantly sent to supplier using XML in a pre-given format. Complete documentation will be sent only to those providers who prove that they know what we're talking about before awarding the project so you have a chance to modify your bid if necessary. Rules for bidding: - all discussion will be done via PM - start your PM with "this is not an automated bid", otherwise your bid will be ignored - one PM is enough, please don't spam my inbox. I will reply as soon as I can. - payment will go only through Freelancer, don't ask for alternative methods - payment will be done using milestones, but NO payment will be released before the project is completed and working. - I don't want to talk to project managers. I'm a developer myself and want to be in direct contact with a developer. - send me MAX 3 of your best ZEN CART projects. I don't care if you're good with Joomla or WP, I'm interested in Zen Cart only. Also, don't send me a list with hundreds of sites you've built as I don't have the time to go over all of it. - availability on skype is a must This is not a high budget job so please bid accordingly. Also, keep in mind that I'm still trying to find someone I can share my work load with (currently, I'm booked by February). Happy bidding.