hi im new to zbrush and im doing all the tutorails i can but im stuck on one lession its about symmetry and every time i use zsphere the floor is all wrong and ive tryed everything woundering if there was a button i press to set it to level out would like it if some one can help plz
is the floor wrong, or are you looking at it wrong?
the floor button on the right hand side has an xyz part of it, toggle the one you want the floor to be on.
The floor is also always placed at the bottom of your mesh by default. You can change all of that inside of the Draw menu…grid I think.
sorry should of let you know the floor is to the left of the screen and the top of the screen is to the right and the floor it set like that from the start and ive try the floor botton and tryed move it but struggling to get it central cheers
This can help 
http://www.zbrushcentral.com/showthread.php?161588-quot-Axis-quot-Plugin-for-ZBrush-4r2
Why do you need the floor to be in the center of the object? It has nothing to do with world space and doesn’t effect your symmetry at all.