Upload your 3ds Max file.

1. Step 101

   Keep it V-Ray

   V-Ray materials, a V-Ray Physical Camera and the right system units.

2. Step 202

   Collapse plugin objects

   Turn RailClone, Forest Pack or FloorGenerator objects into Editable Poly.

3. Step 303

   Archive and upload

   File > Archive makes one .zip with every map. Upload it.

Upload a .zip with the .max and its maps: up to 150 MB free, 500 MB paid.