In an ipt file create a sketch for the path of the chain (actually I think the DAcc already does this for you).
In the ipt with the path create a workpoint on the path.
Use the Rectangular Pattern command (should be called Curve Driven
Pattern - where often the "curve" is a straight line) to pattern the workpoint but the center-to-center distance of the chain link (pitch).
In the assembly constrain one link to the first two workpoints on the path.
In the assembly use Pattern Component and use the "Rectangular Pattern" feature of the Workpoints to pattern the rest of the chain links.
http://www.chiefdelphi.com/forums/at...9&d=1200330921