how to use rsd extension
Insert the language data disc into the computer's disc drive. Double-click the Rosetta Stone desktop icon to run the application. Click the language you'll use to open the .rsd file, from the Language/Product menu on the left-hand side of the application window.Click the unit you'll use to view the lessons from the Unit menu.nsert the language data disc into the computer's disc drive. Double-click the Rosetta Stone desktop icon to run the application. Click the language you'll use to open the .rsd file, from the Language/Product menu on the left-hand side of the application window.