This script contains a readme on how to configure. The trigger automatically adds the computer being created to specific groups based on the OU location where the computer is being created based on a look up of a text file that holds a mapping of OUS to groups. See readme in zip file.
Disclaimer: As with everything else at NetIQ Cool Solutions, this content is definitely not supported by NetIQ, so Customer Support will not be able to help you if it has any adverse effect on your environment. It just worked for at least one person, and perhaps it will be useful for you too. Be sure to test in a non-production environment.