Prevent and application from closing

I am working for a local law enforcement agency as their IT Admin. Recently we just started using this ftp client built into the police software. This software polls all networked computers in the dept. for arrests and when it finds them, sends them to the court system. This program need to be running 24/7. The problem I am having is the polling (ftp) is running on a computer that different officers use and they may accidently close this application. The application is minimized in the task bar and there is no running service connected to this program. The PC is runnin Windows 2000 SP4 and I would like to know if there is a registry hack to prevent a user from closing this application or a program to convert this application into a service.