You might have noticed that all the former screen shots and example renderings were skipping the most important part: How the HDRI setup was done in detail. So far I have only proven that it works. Now we're going to look at how it works efficiently.
Now, what I am not going to do is show you screen shots of buttons to push in Maya/3ds MAX/XSI... rest assured that they are there somewhere; you will have to consult the manual to look them up. I will show you the methodology so you know what to look for. Myself, I'm using LightWave, but the techniques apply everywhere.