Add collision to the coils of rope from usable workshop crosses

[SAC]

Hi,

 

Would anyone please add circular collision (i.e. a hollow ring following the shape) to the coils of rope used in Usable Workshop Crosses?

 

http://www.loverslab.com/files/file/3432-usable-workshop-crosses/

 

Those coils would be very useful restraining ragdolls (dead NPCs) in place after they... succumb.

 

I would love to do it, but have no idea why. I saw some tutorials, but I am unable to find neither 3dsMax 2012, nor the HCT physics tools.

 

Thanks!