PS3 controller with Xbox 360-supporting games?

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http://ubuntuforums.org – When I game in Windows, I use MotionInJoy to emulate a 360 controller using my PS3 controller via bluetooth. All is well, at least, when the game has native controller support. If I'm playing a game through Wine that has native 360 support, it generally doesn't recognize any part of the PS3 controller. I have not 360 controller to test whether that works, or not. Has anyone managed to get this working? (Hardware)