This is absolutely, totally, and completely unsupported.
No one will answer any questions about it.  No one will
support a system that was installed using this method.

If it works, great.  If not, also great.  If it completely 
destroys your system, it's your fault, not mine.

How to use:
  - unpack bootstrap.zip using your favorite unzipper
  - run "bootstrap.bat"
  - you now have the core cygwin kernel installed but almost
    nothing else.  There's bash.exe, sh.exe and a few utilities,
	 but you'd better install some packages.
  - the end.

You can also use "manual_install.bash" and "manual_uninstall.bash"
to add or remove cygwin packages.

What these scripts don't do:
  they don't parse filename / version numbers exactly the same
    as the official setup
  they don't handle upgrades (you have to uninstall and then install)
    -- which makes it difficult to upgrade the 'bash' package, for 
	    instance. Ditto gzip, tar, bzip2, and cygwin itself.
  you have to manually correct the /etc/setup/installed.db file; these
    scripts will leave duplicate entries after a reinstall, and don't
	 remove uninstalled entries
  you don't get a handy shortcut for starting cygwin
  they do NOT understand prerequisites and dependencies -- it's even
    possible for the postinstall scripts to fail because they aren't
	 "saved" until the end, and the postinstall script might call an
	 executable that hasn't yet been installed.