Using ROOT to analyse data from Geant4

I am using geant4.8.0p01 and in m work, I wish to use ROOT to analyse data from the Monte Carlo of Geant4, but since I am a new user to both applications, could somebody tell me what should I do with the geant4 files, for example, the GNUmakefile and the main program, and also, are there any additional package which I should download?
Thanks very much

IMHO, the question is “4Geant4Geants” :smiley: