This week's book giveaway is in the OCMJEA forum. We're giving away four copies of OCM Java EE 6 Enterprise Architect Exam Guide and have Paul Allen & Joseph Bambara on-line! See this thread for details.
Just put the full absolute path of the properties file. Don't use a relative path unless you are sure you can control the current working directory when the application is run, and if you can then make the path relative to that directory.