set editor problem

[Ernest Paquet]

Dear Sirs/Mesdames:

I teach Computer Science here at Walsh University, and am planning to teach
a new course using Haskell. My computer is a Dell Optiplex GXi with Windows
NT version 4.  I have Hugs 98, downloaded over a year ago. My download file
is named "HUGS98-FEB2001.MSI" -- (I probably inserted the FEB2001 myself.)
It installs without problems but at no time asks which editor to associate
with HUGS. When I run HUGS and give the command :set, I read the following
setting  -EC:\WINNT\notepad.exe.

Now I have Notetab light installed in C:\Program Files\Notetab
Light\notetab.exe. So in Hugs I gave the command:
:set -E"C:\\Program Files\\Notetab Light\\notetab.exe".

When I then try :edit c:\temp\foo.hs, nothing happens that I can see.
I restored the setting to its original form with notepad. Now :edit could no
longer bring up notepad.
I re-installed HUGS. Still the editor (with setting for notepad as
installed) showed no effect when called.

How can I set the editor to my preferred software notetab.exe? If I must
manually edit the Registry -- something I have never dared to do until now,
I would need to know where to navigate to!

Many thanks ahead for your kind help!

Ernest Paquet
Computer Science Dept.
Walsh University
Canton, OHIO 44720.