Collisions in 3dsmax

Tutorial to make few tousends collisions at once ;). Oh mayby not once but if somebode have great PC then why not ;). When I was puting this fakiing collisions for trees in Tervaniemi I was ANGRY ;) Over 3k of trees on only 4km stage ;). I think we can do with this way, part after part of collisons, in biger stages. Used Modifier is Substitute 

Part 1

Part 2


Regards
L.