Here's a patch to fix it. Without this patch, my NT box can't find DTDs. ;; $Id: psgml.el,v 1.9 2000/07/05 05:31:50 yoshiki Exp $ (defconst psgml-version "1.2.1" "Version of psgml package.") diff -u c:\Program Files\Xemacs\xemacs-packages\lisp\psgml\psgml.el.~1~ c:\Program Files\Xemacs\xemacs-packages\lisp\psgml\psgml.el --- c:\Program Files\Xemacs\xemacs-packages\lisp\psgml\psgml.el.~1~ Mon Aug 21 17:16:45 2000 +++ c:\Program Files\Xemacs\xemacs-packages\lisp\psgml\psgml.el Mon Aug 21 17:16:45 2000 ＠＠ -426,7 +426,8 ＠＠ (concat "%S" path-separator (directory-file-name sgml-data-directory) - "%o/%c/%d"))) + "%o" path-separator + "%c" path-separator "%d"))) "*Mapping from public identifiers to file names. This is a list of possible file names. To find the file for a public identifier the elements of the list are used one at the time from the