Mastercam9 Mill and Mach2 with Camtronics CNC

Okay, I am new to anything CNC, my machine is due to arrive next
month, I am attempting to learn Masterm9 Mill and would like to use
it with Mach2 for my Camtronics CNC kit that I will be installing.

Just trying to get a handle on all I will need.

Q. Do I have to configure Mastercam9 (Postprocessor, etc) to create
a specific type of file for Mach2? If so, how?

I have been told that Mastercam9 has post processors for Mach2, but
cannot find any info how to set that up.

Any help is appreciated.
Gary