So how about comp.vr.vrml?
Vrml is not exactly graphics, infosystems or language, but it seems a 
little presumptuous to do comp.vrml.  The class of stuff, though, is 
virtual reality, with all its blossoming permutations and implications.  
Objections:  "virtual reality means immersive systems" ie. no headmount, 
its not true virtual reality.  I think this is passe, non-immersive 
virtual reality is generally recognized as as legitimate as the immersive 
kind (plus I am sure some people are working on immersive implementations 
of vrml).
Comp.vr.vrml recognizes the new category of topics involved with vrml, 
and comp.vr is broad enough to be a legitimate second level category.