Yes, main comp distributes job to other comps and they do render with max capacity but they can't pull maps from network. I tried backburner also and he managed to get the maps from network but I had another problem with it, he wont distribute job to all comps.
But to get back on subject, I did named main comp, slaves and home group in MyComp like it was described in vrayinfo.tut i attached in my first message.
I'm not sure I understood you regarding telling vray where to find licence, can you please explain that part a bit more?
P.S. Screen is attached in this mail.