Actually, I think what I want to do won't matter. The build of mame I use has a conflict between analog sticks and trackballs, favoring the former and excluding the latter if both are hooked up, and I was thinking maybe the umapper ignoring those games would help, but I think not, because the umapper only sets a particular type of map for the U360. It can't tell Windows to deactivate it or whatever in those cases....right?