[Newbie]Getting started

[P.Dubas]

I'm not sure I'm where I wanted to be.
I have an older windows PC program that I wanted to run on my IMac G4.
I thought Xfree.86 was the pc emulator that would do it. I downloaded the entire package of
XFree86 4.2.0 and I got 3 screens: A login and two xterms. I searched for downloads which would
give step by step instructions but found none. The package seemed to come with instructions but when
I tried to open it, the computer couldn't find the proper application.
Is there someone who could and would help me? Thanx