preparing the data file of Fe Cu Ni Cr C in LAMMPS code

Dear all,

I am very new in MD(LAMMPS CODE) ,I would like to prepare the data file containing the elements of Fe ,Cu, Ni, Cr and C is it possible to prepare data file, by which software we can use for this?

THANK YOU…

This web page:
http://lammps.sandia.gov/prepost.html

describes many 3rd party tools that build systems
for LAMMPS.

Steve