Although it's possible it would completely bypass the powerful facilities available in Zen Cart and would leave you with a lot of unnecessary and complicated work to create the links, and you'll still need to define the categories that we are recommending so that you can link properly to the products anyway.

Trust us. Define categories with exactly the same names as your links. Don't put them in upper case as that can be taken care of with CSS. Once you have the categories defined, you can stytle them to look exactly the same as your menu in your stylesheet or come back here if you need help to do so.