Creating Voronoi Faces?

Hi,

I'm using this really useful library for doing Delaunay triangulations
in 3D.
Now I'd like to create 3D-Voronoi faces from the Delaunay
triangulations.

So my question is:

Is there a ready-to-use implementation for constructing the 3D-Voronoi
faces
(with or without having the triangulation)?
Or can anybody give me a hint where I can look for algorithms that
create
3D-faces from a Delaunay triangulation?

Thany you very much!

Markus

-- 
Markus Gumbel
Deutsches Krebsforschungszentrum    (German Cancer Research Center)
Div. Med. u. Biol. Informatics
Im Neuenheimer Feld 280             D-69120 Heidelberg, Germany
Tel: (+49) 6221 - 42 2355           Fax: (+49) 6221 - 42 2345
Homepage: http://mbi.dkfz-heidelberg.de/mbi/people/markusg.html