@Jason Carr sorry for the confusion! from watching ETA's vid on neoGeo with retroArch, it looks like I will just need to place the retroArch folder/subfolders in a central location, run retroArch updates, and then create a "new emulator" in LB, that points to the retroArch version of the emulator. and looks like we can add a command line that points to the particular rA version of the emulator's dll... back home from Tgiving vaca now, so I can give things a try! . let me know if this makes more sense now! sorry again for the confusion!!