Sorry for this late response.
I spent some time in learning how to create a web site that
contains some responses I received for the question I posted
regarding resources on Planning Support Systems and some other stuff.
Please go to http://profs26.geo.swt.edu/ and link to my page. You
then should be able to find the PSS resource link.
It is just a starting, your further information on this topic is
Thank you for your patience.