Supporting Windows

Hi - I need to restrict install/execution of a ".exe" that doesn't show up in the "Add/Remove Programs" listing. Also unable to find any reference to it in the KBOX software/processes/services listings, or get any hits while searching for the ".exe" in the registry. The software is installed with a setup disk and cites Win 3.1/95 as a minimum requirement. The user manual is dated 1997. Any guidance on how to detect and block install and/or execution via the Kbox would be appreciated. The objective is to limit the ability to install and execute this legacy software to a small group of computers. thanks, Owen.