superimposing two molecules!!

From: Pradipta Bandyopadhyay <pradipta/at/cgl.ucsf.edu>
Subject: superimposing two molecules!!
Date: Mon, 23 Jun 2003 16:53:28 -0700 (PDT)

 Hi,
  Does anyone have a code (in fortran), which superimposes two molecules?
  I am looking for the implementation of the algorithm mentioned in the W.
 Kabsch paper (Acta. Crys.A 32, 922).
 thanks.
      Pradipta