Need help choosing WM for old machines

[Daniel Glenn <danielrg@ms3.hinet.net>]

Question from White Horse in Taiwan:

We just installed RedHat 6.0 on our old Pentium-100s and X Runs SLOW.
GNOME with Enlightenmnet doesn't cut it in only 16 megs of RAM
(especially considering that we have onboard VGA which means the Video
has to share RAM with the Main system)

So the question is, Which Window Manager can we use that will allow us
to do these things:
Run Netscape (composer), and GIMP so that we can create Web Pages.

What simple file manager would be best? 

Thanks for you help.
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