@Hacko - I would advise you to be very careful with using programs to update SAS metadata. It is very easy to corrupt your repository. At the very least take a backup before doing updates. IMHO, SMC is a far better option if you are adding or changing a small number of users / groups.
The SAS Users Group for Administrators (SUGA) is open to all SAS administrators and architects who install, update, manage or maintain a SAS deployment.