Thanks for the reply Rob. I was thinking I could create node sets for the CG's and then use a history output request to obtain the necessary data.
In terms of editing the inp. file to create new sets, is it possible to identify the node-of-interest with x-y-z coordinates or does is it have to be the node number? If only node numbers can be used, how do I correlate that to my CG coordinate?
Thanks,
max