tunakaraman

The link is dead. =/

Max count is maximum number of instances MS is allowed to use. 'Use density' should work when 'Use random position' is ticked.

Looks like something is wrong with your mapping. Didnt you apply an uvwmap modifier ?

In addition to everything above, i think you should be adding dirt, dust etc. (mostly at subtle levels) to your textures. I know it's a lot of work but it certainly pays off when done right. Google "Richdirt", they have some good demonstrations on this.

There is something called VrayLightMeter under Create>Helpers>Vray if that's what you're looking for.