Adding a Grid to an XY Plot

I have a simple XY Plot that needs a gridlines on the display to help depict
values.  Does VisAD have this capability.  Thus far, I have been unable to
find any method or class that does this.  A Gridded1DSet/Gridded2DSet looked
promising but after further inspection, it appeared that  this was really
only for clustered data such as Gaussian distributions among others, not
adding gridlines.  What do I need to do to add gridlines to my display?
Thanks,

John Clark 
Information Operations
Lockheed Martin Aero.