QTR-Quadtone RIP

I having trouble setting up the QuadTone RIP 2.5.2 with my EPSON pro
4800.  I'm running Mac OS 10.4.11 (I'm not using Leopard).  Using CS2.
 I downloaded QuadTone RIP 2.5.2 and click on the installer and that
was successful. Now what do I do?  I've read the tutorial that came
with the download, but my simple brain just can't figure it out.  Can
some kind person please give easy to follow directions on this.  I
would greatly appreciate it.

Thanks,
Steve