Is there a way to specify the order of series on a composite chart.  By order I mean a way to say which lines are drawn in the back and which are drawn in the front.  This is useful to me because there is one series on my chart that must always be in the foreground. 

I have tried the following methods without success:

1.        ensure that the important series is first in the list of series.
2.        ensure that the important series is first in the list of series.
3.        add each series to a seperate layer, and then try 1 and 2 with the layers
4.        search the documentation for an ordering property on both series and layers