Thanks maxxxmodelz , when 500GHZ processor, with 4000GB Ram will be out, my 2004 projects will look so simple and naive, but for now, there is no easy way for one guy with a regular budget to do huge crowd generation ! Well I will surely post a work in progress soon on my web site (check the video section) I have a concept that involve 500 M2 structures.... well I will split the job in 25 M2 chunks... the scene takes 30 minutes to load and crash evry hour... damn ! Wanna see some experiments, check my perso site: www.valdenaire.tv in french, but not much text mostly Videos and images ! Feed back would be realy appreciated ! Jeff