http://bugs.winehq.org/show_bug.cgi?id=21206
--- Comment #4 from Dan Kegel dank@kegel.com 2010-01-10 00:40:08 --- http://www.fruitbat.org/Cygwin/ pointed me to http://cygwin.com/setup-legacy.exe, which seems to be the official way for win9x to get at the old major version of cygwin going forward (though I haven't seen an announcement anywhere).
Sadly, that installer makes wine explode, too ( it fails because /etc/postinstall/cygwin-doc.sh etc. don't get installed ). The installed cygwin seems to work, though since postinstall didn't run, things like PATH aren't set up properly.