CS CART XML FEED FROM SUPPLIERS

I need a programmer that he can change the existing structure of the supplier xml feed for my cs-cart 2.2 that i am already running and i want to add 2 more suppliers. I can't contact my old programmer to do it this. If this not possible i need a hole new addon. The characteristic of the addon is that i choose in every category of my website, the supplier that i want to use and the percentege % of my profit from 0 euro. etc i want at the notebook category 2 supliers and i need profit from 0-100 euro 10% and from 200-500 5% and i have the ability to choose the profit in any price. Please let me know if this can someone do it. Regards Nikos Mediaram