How can I replace LightDM with "MDM"?

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http://askubuntu.com – Linux mint cinnamon 1.4 released with "MDM display manager".It is based on the code of GDM2.20.It provides:- Graphical configuration tools Themeability Remote, automatic and timed login Event scripting Language selection And it comes with more features than any other Display Manager currently available. (MDM) So How can I use MDM instead of lightDM on Ubuntu? (HowTos)