Hello, I am pretty sure this is simple to do but I have no idea how to. I have been searching web but I am unable to find the answer. When I am editing my model and I want to scale only lets say in X how do I do that? I am able to scale in 2 dimensions when I drag the middle circle. Thanks a lot for your help. Peter
Tool / Deformations palette. Just select either x, y or z axis.
http://www.pixologic.com/zbrush/features/14_Deformations/
Richard
use transpose in move mode not scale, and push/pull outer ring
Thanks Spaceboy, this is what I was looking for
Its funny to use move for scaling but it works and thats whats counts 
Richard: Thanks this should work too, but as I understand it’s not interactive, right?