Add fields to Product page OScommerce.

I would like to have my product pages for logo mats at: [login to view URL];products_id=199 To have a Browse field and a price discount range much like that found at: [login to view URL] See details of project below: 1)I would like for my product page to have a “Browse” field added so that clients can upload their mat graphics to me. The out come would be an attachment sent to two email addresses of my choosing. 2)I also need to offer discount pricing by quantity range ordered. Much like if not exactly like that seen done here: [login to view URL] 3)I would also like to add a Logo Instructions: field area also seen on the: [login to view URL] Let me know, Charles Hall