Luxrender is a great tool, so I'd encourage you to persevere - there's lots of people here who are willing to help you get to where you want to be!

So, first of all, back to basics:

Have you downloaded and installed Luxrender?

If not, you need to download it from the Luxrender site at:
http://www.luxrender.net/en_GB/download
(be sure to download the right version for your OS and hardware)

Then make sure you can run Luxrender, so that you can see the same view as I posted.

Pose2Lux doesn't do any rendering itself, it needs the separate Luxrender program to be installed.

If you've already done all this and your problem lies elsewhere, please don't be cross :-) Sometimes it's best to start at the very beginning!

Let me know if you can get as far as running the Luxrender program on your system, and if it doesn't look like the screencap I posted then try to show me what you do have?

We'll get there!

Free stuff @ https://poser.cobrablade.net/