Here is a modified script (px_control.ms) for creating keyframes for Rigid Bodies, Cloth, Tearable Cloth, Metal Cloth, ...
Instalation:
(This script is for PhysX plugin for 3ds max 1.0.5 but may work in other versions)
Go to your 3ds max/scripts/physx folder and rename the old px_control.ms to something else (for backup). now place my script in this folder.
To use it:
Start your 3ds max...
2009-07-05 09:10:49 UTC in PhysX plugin