osCommece Pricing Mods

I need someone to install two contributions on a customisation on an highly modified osCommerce site. At present, we have a custom discount routine based on Membership. To explain, anyone not logged in should see the Product prices PLUS a percentage on top (reverse discount/premium). THIS IS NOT WORKING If they are logged but not a Member, they still see the price PLUS a percentage on top. THIS WORKS If they are logged in and a Member they see the base prices. THIS WORKS 1) Need to fix the problem mentioned above. 2) We also need to add quantity price breaks contribution. It has to work with the same pricing strategy described above. Since we have modified the code, you cannot just upload programs, you need to change the 9 programs listed in hte contribtion by hand. Please check the contribution [login to view URL],1242/category,all/search,price+breaks 3) Need the Multiply Attribute Contribution too as some product have an option to increase price by a percentage