When an image is clicked, it opens...dark background, polaroid looking image as it should, but there is not prev or next and there is no transition, it just opens and closes. The plugin that I installed from jei.afraid is different from the one at huddletogether. there are way more files in the latter.
So..it seems the wp plugin is way lighter than what is offered at the huddletogether site. I'm no pro, this is why I'm asking what likely seems to be a silly question. The wp plugin seems to be the necessary js files to get the basic effect of the lightbox and the other seems to be more of a "full" version. Without playing for hours and guessing, I'm just not all that sure of how to get the one from huddletogether setup as I prefer the way that one works.
If you want to see what I'm talking about, just get the wp plugin and install it, I guess that would be easiest. http://jei.afraid.org/wordpress/index.php/2006/04/08/wordpress-lightbox-and-image-manager-plugins/
TBH, I'm not even sure "which" lightbox to use, there seems to be a bunch of different ones out there.