I refreshed this with Lightbox 2.51 and now with JQuery 1.7.2 with VB4.1.12pl1
Create the same BBCode but change the "Replacement" to the following (Notice I also didn't want a text part adding - uncomment it if you do.
Code:
<p><script type="text/javascript" src="/forum/clientscript/jquery/jquery-1.7.2.min.js?load=effects,builder"></script>
<script type="text/javascript" src="/forum/clientscript/lightbox.js"></script>
<link rel="stylesheet" href="/forum/css/lightbox.css" type="text/css" media="screen" />
<!--<strong>Click Thumbnail to view Full Image</strong><br />-->
<a href="{param}" rel="lightbox[thispost]" title=""><img title="Click to Zoom In" alt="Click to Zoom In" src="{param}" width="300" /></a></p>
This also shows a tooltip of "Click to Zoom" when a user mouses over and create all images on that page as a group so you can use the left and right arrow navigations from the lightbox.
Basically repeat the steps in the original post, but you'll not find prototype.js in there any more as they've changed to JQuery.
So you'll need to go download JQuery 1.7.2 and put that into the clientscript/jquery folder
NOTICE: This current code also assumes /forum/ as the path to your forum. Just change that if required.
Hope you find it useful.