adding hydrogens to pdb files

From: PAUL HEELIS <paul ^at^ heelisp.demon.co.uk>
Subject: adding hydrogens to pdb files
Date: Tue, 20 Aug 1996 11:40:53 +0100

 Dear all
 Anyone know of a program to add hydrogens to amino acids
 in a pdb file. preferably free.
 thanks in advance
 --
 PAUL HEELIS