It is the first option listed: "NCSA 2.3.08 Update". This script will automatically remove the old verion and replace it with the new version but does not make any changes to the NCSA CONFIG.TEL file.
If you cannot access the S:\ drive or do not use Windows but would still like to get the update, contact the Help Desk at x5888 or send e-mail to helpdesk@wpi and we will help you.