The SmartVIEWER application doesn't appear to be available anymore. I have tried looking for it, but there isn't anything available on the IBM website. The only way to acquire silent install information is through contact. Access the page linked below and get in touch with IBM. They should offer all the necessary details about this application.
Home page: http://www-01.ibm.com/software/analytics/spss/
Note: Click the right link in the contact box.