**UPDATE: I have provided instructions for how to link a NextGen Gallery image to a post or page in the 2.0+ version of the plugin.
If you’ve ever wanted to add additional information about the images in your NextGEN Gallery, you can do so with the NextGen Custom Fields Plugin.
This plugin will add additional fields that you define to each image in the gallery.
The downside of this plugin, is that you have to be comfortable editing the template files. To actually display the data in your new custom field, you need to edit one or two of the templates that are included with the NextGEN Gallery plugin.