Add Data Sheet/Brochure to product listing from Zen Cart Admin

Im looking for someone to implement a system that adds a brochure/data sheet to the product page which is all done from the zen cart admin when adding/editing a product. One the pdf has been selected in admin its uploaded, stored and a link is added to the product listing on the front end. The link on the product page will be a generic hyperlink with the name "Download Datasheet/Brochure" If you need clarification please ask before bidding. Please note this is quite urgent. Looking for someone with extensive zen cart knowledge as i need other projects completed as well.