[h-e-w] specify an icon

[Stephen Leake]

I usually have two Emacs instances running; one for reading mail, one
for doing other work.

I'd like them to have different icons, so finding them in the MS
Windows Ctrl-Tab display is simpler.

I don't see a way to specify the Emacs icon at run-time; there is the
command-line option --no-bitmap-icon, but no way to choose which icon
to use. Is there a way?

-- 
-- Stephe