Lux render lighting

hi, i am needing some help coming up with some good lighting in Luxrender to simulate the lighting in this photo found on blender cookie, made by Johnathan Williamson.

there is a tutorial on how he did it in cycles here->

if anyone can help me achieve a similar effect in lux i would appreciate it. pics are fine, although just telling me how is going to be hard for me to understand, i will save you the finger work there.

thank you so much for the help, this is somthing ive been trying to get for a while, the soft environmet lighting he did is pratigularly hard because you cannot make an invisible lamp in lux, therefor creating a circle or cube around an object using emission is hard.