Use Publish to create projectors for both Windows and Macintosh systems. There are no settings to specify for creating projectors.
Although you can create a Macintosh projector using the Windows versions of Flash, you must convert the resulting file use a file translator such as BinHex to make it appear as an application file in the Macintosh Finder. The Windows version of Flash names a Macintosh projector file with a .hqx extension.