Call me dumb but I don’t know if any one else has noticed this - I was looking at Poser tutorials and found this one by Southern - http://www.southerngfx.co.uk/general/tutorials/posertutorial/tutorial.htm - and thought I would have a read.Well I was readying the tutorial and noticed that the poser man had his left arm up in poser then when he exported it to Z the poser man had his right arm up - well infact the mesh was an exact mirror copie to the first.The ? is did Southern do this or does the importing to Z do it.I don’t own either program so I cant test it out.
Thanks for your time. 
When a mesh is brought into ZBrush from Poser, it is rotated 180 on the Y axis and mirrored across the X axis. This is because ZBrush and Poser’s world coordinate systems are different – not at all an uncommon occurance among 3D packages.
When in ZBrush, you can use the Rotate and Mirror deformations to put things right again. But if you plan to take things back to Poser as a morph target, then you would need to do the deformations again before exporting in order to sync the model back up with Poser. Alternatively, you can just ignore the change and while you’re working keep it in the back of your mind that left and right are switched.
What Aurick said. Although, if an image for a tutorial doesn’t fit the design I will flip it in H anyway.
Cheers,
Glen
Thank you both for your replies.It was just a small thing I had noticed.But I will surely remember that in the future when I finaly buy both programs.Thanks again.