Dosius sugested: >My suggestion is to use the format "rbmunch1.$1C" (volume number in >hex) and have the emulator recognize *.$?? as .dsk files. This approach would require creating up to 256 file type associations if you'd like to launch an emulator by double-clicking a file. -michael Check out amazing quality 8-bit Apple sound on my Home page: http://members.aol.com/MJMahon/