for a wish list, you wouldn't save the info to a cookie, i wouldn't do it that way, i would saver the info to a wishlist database table.
first off, before they can add an item to a wishlist, they would need to be logged in. the Security Assist Authentication will save the logged in users ID to a session variable.
on the product page, add ash Add to Wish list button. And add an insert record behavior. the insert record behavior should be set to save the items ID to the wish list table, and the users ID
on the page to display the wishlist, you can use a recordset to search the wishlist table based o the users ID and join the products table to show the products for the logged in user.