osCommerce Ship Class Creation

I have been trying to complete a new shipping class for osCommerce for 2 or 3 months now. Keep running into difficulty with one part. The new class will enable the user to configure all products shipping methods through a "Vendor" system that allows one to create profiles for which shipper will be used and all shipper's options. I have already written the protion that handles the Vendors and adds each to each product. The problem I have been having is calling proper loops to get a ship quote for each Vendor's product in the cart. The product is tied to a specific Vendor, that Vendor has specific shipping parameters selected for them(shipper, handling charges, overnight or not, free shipping after "this much", specific table or zones rates, etc....). This will need to be expandable as it will become part of a larder Vender Mangement system I am writing. If you are interested in working on this let me know with an estimate on your fees and your ref.s for CUSTOM osc work. This has been worked on by several different people over the years, but noone has finished it yet, for whatever reason. More details are available.