WordPress.org

1. Edit the lightbox-gallery.js and check the path of line 2 according to your settings.
2. Copy the lightbox-gallery directory into your wp-content/plugins directory
3. Activate the plugin through the 'Plugins' menu in WordPress
4. There may exist localized images in 'images' directory. Replace default images with them.
5. That's it! :)

Lightbox Gallery will load 'lightbox-gallery.css' and 'lightbox-gallery.js' from your theme's directory if they exist. If they don't exist, they will just load the default 'lightbox-gallery.css' and 'lightbox-gallery.js' that come with Lightbox Gallery. This will allow you to upgrade Lightbox Gallery without worrying about overwriting your lightbox gallery styles that you have created.