[AUCTeX] gwin32c and auctex

[Norman Fuchs]

I've been using an older version of emacs for some time now (under Windows XP), 
and I have used auctex (MikTeX) without much trouble.   However, I noticed that 
there is a preview-latex system now available.   So, I downloaded the 
pre-compiled version of Emacs + AucTeX

emacs+auctex-w32-2006-06-24.zip

from the website 
http://www.gnu.org/software/auctex/download-for-windows.html.

I have had trouble with getting preview-latex to work.  It complains that it 
can't find GSWIN32C.EXE.  I have it in C:\Program Files\gs\gs8.51\bin, and I've 
never had trouble viewing ps files inside emacs before.  For printing, I have 
the path to this file specified in my .emacs file, via

(setq ps-lpr-command "C:\\gs\\gs8.51\\bin\\gswin32c")

Perhaps there's some environment variable that auctex looks for that I need to 
reset?