Gallery Link to another page
I would like to use the gallery images to link to another page on my site, rather than a blog post. I've set up the gallery under the category "photogallery", and then I call the images in the custom field box. This all makes sense and it works to show the image and provides a link to the post. What I would like to do is use the image to link to another page, rather than a blog post. I tried to set it up under the Write>Page section of WP...but there is no category section in which to call the "photogallery".
Is there a way to;
a: change the link so that I can leave the "fake" blog post and just link to another page?
b: change so that I utilize the plugin in the Manage>Pages section?
Does all of this make sense?