I doesn't install... Just run custom_ms.exe or custom_ms64.exe (depends on your OS 32/64) be sure to have conf.ini in the same folder as exe and run it as administrator. I have already described how to use in my thread.
BTW I FOUND A QUITE BIG ISSUE SO I WILL HAVE TO DO UPDATE AGAIN WHICH IS ODD
(i thought that macro is freezing because sometimes it wasn't shooting... Then i realized that i am holding SHIFT while i was shooting so it wasn't working - I fixed that)