Very flexible and fast script to generate a bone based skeleton over the 3ds max's biped. This script creates an entire rig from Bip character. If you don't have time to create all roll bones, and repeat all the same on the mirrored side, just create Bip and set up it's proportions, run the script and magically you will have a brand new rig.
To start, just create biped, custom it in figure mode to match your character. When done, create a new empty layer, select any bip element, and click on script button. Bones will be created automatically on biped structure.