Sorry you guys are having problemas, I am at work atm, I will try to whip up something this evening. But meanwhile, give this a try and see if it answers any questions. (from the docs)
Zcurve Quick Start
– Load Zcurve
– Zcurve loads with the control points at a default position.
– Press “Create” - this will draw the default curve on the canvas.
– Selecting Move, Flip, or Rotate will allow you to transform the current Curve appropriately using the Navigation Panel.
– You can modify your curve by selecting one or more of the control point switches (Sel-SP, Sel-CP1, Sel-CP2, or Sel-EP) and use the Navigation Panel to change the curve in realtime.
– To Reset the curve to default press the “R” key on the Navigation Panel. This is useful also when starting a new curve as it resets all the Control Points.
– Press the Settings button or use the Shortcut Key “d” to bring up the Settings Menu. Here you can change the curve’s resolution, select a 3 or 4 point curve, turn BestFit on or off or enable the Control Points sizing to effect the curve or not. Changing Bestfit or Res will require that you press “Create” to redo the curve
– Press the Control Button or use the Shortcut “SHIFT d” to bring up the Control Menu. Here you can center an object (curve or control point). Clear the canvas; Save or Recall position/scale/rotation of an object or restore a curve to the canvas using its Encoded data.
Hopefully this will help you get started.