assigning an axis to a particular series on a graph

I am trying to plot 4 lines of varying units on a graph. The y-axis will have units of (in/sec, in/sec, in, yards) and the x-axis will have components. I need to plot the 2 velocities and 2 distances on same chart while assigning them their own scale for easy interpereting. Please help.

You can add a secondary axis for one of the quantities http://office.microsoft.com/en-us/ma...spx?CTT=1#BMxl