Standard blurb:

The 84MB "self-extracting archive" method:

Assorted IE versions:
 http://cws.internet.com/ie.html
 http://browsers.evolt.org/?ie/32bit
 ftp://ftp.skynet.be/mirror/microsoft.com/ie/
 http://public.planetmirror.com/pub/microsoft/ie

IE 5.5 & 6.0 only:
 http://www.it.utep.edu/wksupport/applications.html

No longer available here, but here's the old link:
 http://helpdesk.uvic.ca/how-to/support/win95/msiexpl.html

After downloading, double-click on the 84MB file. It should
automatically create a new sub-folder under its current location
called "IE 5.5 SP2 Full", and auto-extract yet another 84MB of
CAB files and a few EXEs into it. To install, go into the new
sub-folder and run ie5setup.exe