2) Open up a Terminal window and cd into the Desktop directory. To ensure you can execute the application, type
chmod +x OSX-3.24
3) Now, type
./OSX-3.24
to run the program.
4) You will be asked a series of questions to set up the configuration. The first of these will be what User name you would like to use--this is so that you can track your work on the statistics web page.
5) The application will download the scientific core (may take a few minu tes) and then get to work. If you would like to hide the terminal, just choose Hide Terminal from the Terminal menu.