Apparently Luxrender is not part of Reality 3 like it says in the guide and in the Youtube video. I was even told the guide that comes along with Reality 3 is out of date.

I go to this page-http://www.luxrender.net/en_GB/index  and select the poser Luxrender icon and it wants me to download another program, Pose2Lux on top of Luxrender.  Is this necessary because the guide doesn't say anything about Pose2Lux?  When I click on the link on the Pose2Lux site to download Luxrender 0.8 (that's all that it offers even though the guides says you need Luxrender 1.2 or higher) it just sends me right back to this page where I started-

http://www.luxrender.net/en_GB/index

Does anyone know the exact version of Luxrender that I need for poser 9 and Reality 3.  Everything I'm reading seems to jump right to B or C with nothing explaining A.  

Luxrender is an independent, open-source render engine designed to work with any number of programs which have plug-ins, or "bridge" as they're often called, written to connect them to it.  Plug-ins do not come with Luxrender.  They must be downloaded and installed separately as part of your program's core functionality.

For example, Blender has a plug-in called LuxBlend.  The one you mentioned, Pose2Lux, was written for Poser, and is a free alternative to Reality, though it lacks many of Reality's features.

Reality was developed three years ago, originally as an exlusive plug-in for DAZ Studio.  Reality 3 is the first and only commercially available version written specifically with Poser in mind, and is not part of Luxrender.  Nowhere in the Reality User Guide or any YouTube video is there any suggestion or implication to the contrary.

I clicked on the Poser icon on Luxrender's web site.  It clearly lists Reality as an optional plug-in for Poser in addition to Pose2Lux, and includes the direct link to the Reality 3 page at Pret-a-3D.

The latest version of Lux is 1.2.1.  That's the one you want regardless of which program you're going to use it with.

You want to download the standalone luxrender to use with Reality from here:

http://www.luxrender.net/en_GB/standalone

You don't need anything else but LuxRender. 

Cheers.

Thanks a bunch! 

You are quite welcome.  Enjoy!  :)