Have to install mozilla by hand to use builtin iexplore?

[Dan Kegel]

I saw the iexplore patches go in on wine-cvs, so
I refreshed my source tree just now with git and tried
  rm -rf ~/.wine
  iexplore http://google.com
but I got
Could not load Mozilla. HTML rendering will be disabled.

To get it to work, I had to manually do
wget http://ftp-mozilla.netscape.com/pub/mozilla.org/mozilla/releases/mozilla1.7.13/mozilla-win32-1.7.13-installer.exe
wine mozilla-win32-1.7.13-installer.exe
After that, iexplore worked (though without any navigation still).

Isn't wine supposed to install mozilla by itself, or something?
- Dan