I have to be getting closer.

http://www.kixtart.org/board/ultimatebb.php?ubb=get_topic;f=1;t=002478#000001

I will need to test this tomorrow as well. Specifically, if the script posted by Mark Antrobus always deletes existing printers or only if netware, as I want to do. Once all of netware is gone, I will no longer need this checking to be performed. He also shares a script that creates a logfile for current printers and he mentions group membership being used for future printers (though he didn't post this snippet, but offers it).