A new random image module that allows selecting of existing directory user has access to.  Directory must contain *.jpg, *.gif, or *.png but can contain other files as well; they won't be included in image rotation.  Images refresh on screen refresh.  Settings module allows choosing of directory, setting horizontal image alignment (for all images), and returns the number of valid image files in directory.  It will also return a warning for any directory with zero (0) valid images.  It can be downloaded from http://dotnetnuke.montreat.edu.  I hope to add a timer that will refresh the image without a page refresh in the near future. 

Version 1.1 has been released and can be used as a skin object.  Module and instructions can be found at http://dotnetnuke.montreat.edu.

Have you uploaded it as a new Skin Object Control ( [Skin Objects] under Module Definitions) ?