I am having trouble making the 'Helix' function work with any consistency. My main problem is in the progression of inputs and when to just 'enter' and when to 'right click'. This is what I am doing- (pick start of axis) pick point and left click: (pick end of axis) move arrow up to point and left click, if you right click next, the whole thing disappears. If I move down the axis to the level of the start point, a perpendicular solid line will go in both directions from the start point. I move my arrow to a point on the line and left click and nothing happens. If I enter a radius into the box, nothing happens. Sometimes it will just work and others nothing. I have noticed that the times it works, the perpendicular line does not appear and once I have picked a point- the helix will construct. Anybody else having this problem? I am running under Win XP.