I'm sorry for the wrong post... I'm very new to zBrush... I don't even know what Scripts are... I did what you said, Moochie, but when I move the head around, it doesn't have it's own central point, it turns the same way as it turned when the body was still there... Is the body now permantly deleted?
Scripts are a great feature of ZB .. they allow users to record modeling sessions, which you can then share. Because they're text files, they are very low memory. Most cool. You'll find quite a few in the Help section of ZB itself, and loads on this board.
To switch the centre of gravity for what's left of your model, just press the S.Pivot button (right hand vertical menu bar, by default).