Some fun ones:
RMManage- contains network management tools (Need an admin account to run these)
RMBuild- contains the setup files which are used during a rebuild of a machine. There's a full version of windows dumped in this folder, and if you modify anything in there, any computer that is rebuilt will pick up the changes
RMStudentWork- contains the home directory (My documents/N drive) of every student user on the network (:!:)
RMPublic- RMStaff is in here as far as I can remember
RMMultimedia- contains virtual CD's and other files needed by the CD-ROM Player application
Those are the only ones I can remember off the top of my head; just ask if you need to know what anything else does or have any other questions
