MS Intelli Mouse Optical not working on Mint Linux 15 64-bit

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http://unix.stackexchange.com – The title tells everything I guess: I have a MS Intelli Mouse Optical with 5 Buttons and the side buttons are not working. I have searched for a xorg.conf file but I couldn't find it. What can I do to make the mouse work like in Windows 7? (You know the plug & play stuff) (HowTos)