I am using the default Slideshow included with WordPress (It's listed as "Nivo") I am trying to use shadowbox.js as a player, however you have to add the "rel" tag to the individual attribute. The issue is, where do I add that tag? The image is not an tag, it's an actual "page" in the slideshow tab on my wordpress admin navigation.

I have access to the ftp, but I don't know where to go in there either.

Any thoughts?