http://www.splinedynamics.com/randomixer-scatter-tools/

Scatter Tools is a powerful 3dsMax plugin to rearrange, randomize and redistribute the objects in your scene in a very simple and intuitive way. Swap them around, apply random transforms and quickly scatter them wherever you need.  Scatter, don’t clone. Unlike other scattering plugins, Scatter Tools helps you rearrange and redistribute the existing objects in your scene. It does not scatter multiple clones of a source object. It scatters the objects you select over the distribution surface or the points you have defined. Since it doesn’t use a particle system, you can always access your objects and adjust them manually if necessary. Additionally, you can restore their original transforms at any time.