Mathematica, X on Sun 3/60, 3/50's

[mn]

Is anyone using Mathematica from X to display graphics on a remote
machine?  One of the guides that came with Mathematica seems to indicate
that this can be done but doesn't give the exact commands and everything I
have tried results in an error.  If a command is given to Mathematica
which generates graphics, like:

    In[1]=Plot[x*x, {x,0,10}]

  Mathematica responds with:

    Out[1]=-graphics -
    In[2]=%%[ Error: can't connect to X server; OffendingCommand: (null)) ]%%

An xhost command is done on the remote workstation before running
Mathematica and DISPLAY is set.  Mathematica says it is initializing X11
graphics.  Mathematica is version 1.2, X is V11R4 and SunOS is 4.0.3.
Mathematica is running on a Sun 3/60 and I want to have the graphics
displayed on a Sun 3/50.

Has anyone successfully done something like this and could explain to me
exactly what needs to be done?  Thanks.

Marlys A. Nelson, System Manager/Programmer
Academic Computing
Univ. of Wi - River Falls
BITNET: ACS_MN at UWRF