OK, Next Emulator, next headache! Went through GE emu installer - installed Mess for Atari 7800. Kept all default settings. Rom path's correct. Tried with and without 7z option enabled - no joy! Just goes black on launch then returns to GE. Still can't find clear, current setup guides for each emulator. As the default rarely works, would it be worth an experienced GE user setting up a separate topic with stickies for each system? Just a suggestion. Anyways - can anyone help?? Thanks