While it was possible to install Java3D over the FCS H promotion and
succesfully run a Java3D application, this is no longer true for the I build.

Download Java3D 1.1beta1 from the Java Software website. Install it over a
copy of the I build in the jre subdirectory (as recommended by the installer).
Now, download the Java3D example programs and try to run the Hello3D program.
The following error message appears:

Exception in thread "main" java.lang.NoClassDefFoundError: javax/media/j3d/Group


These same steps applied to the H build work fine.