I'm not sure we're on the same page on this. It seems to me that you are under the impression that I said its possible to adjust the location of the x-axis, however, it is not possible to move the axis to be at the 0 mark of the y-axis. If you could explain what you are looking for more clearly if that's not the case, that would be great.
Also, are you using Dynamic Web Charts or Dynamic Flash Charts?