Okay, not sure what you’re looking to DO here – however if you’re speaking of clicking on an image to have the larger image come up in a new window, you don’t need a plugin to do that. You simply use the WP image uploader and choose “use thumbnail” and “link to image”… no plugin. (Of course, silk just came in and told you of the one being used – there are many options)
If you want the plugin for making a list of related posts to a search query when someone lands on your site from a search engine, the site owner gives the link right there… https://theundersigned.net/2006/06/landing-sites-11/
Please try to be a little more explanatory as to exactly what you’re trying to DO from this point on… no one can TELL what kind of plugin someone’s using without knowing what it is that you want to happen.
