-#define GRAPHICS_SUBDIR "gfx_classic"
-#define SOUNDS_SUBDIR "snd_classic"
-#define MUSIC_SUBDIR "mus_classic"
+#define GFX_CLASSIC_SUBDIR "gfx_classic"
+#define SND_CLASSIC_SUBDIR "snd_classic"
+#define MUS_CLASSIC_SUBDIR "mus_classic"
+#else
+#define GFX_CLASSIC_SUBDIR "gfx_orig"
+#define SND_CLASSIC_SUBDIR "snd_orig"
+#define MUS_CLASSIC_SUBDIR "mus_orig"
+#endif
+
+/* file names and filename extensions */
+#if !defined(PLATFORM_MSDOS)
+#define LEVELSETUP_DIRECTORY "levelsetup"
+#define SETUP_FILENAME "setup.conf"
+#define LEVELSETUP_FILENAME "levelsetup.conf"
+#define LEVELINFO_FILENAME "levelinfo.conf"
+#define GRAPHICSINFO_FILENAME "graphicsinfo.conf"
+#define SOUNDSINFO_FILENAME "soundsinfo.conf"
+#define MUSICINFO_FILENAME "musicinfo.conf"
+#define LEVELFILE_EXTENSION "level"
+#define TAPEFILE_EXTENSION "tape"
+#define SCOREFILE_EXTENSION "score"