PLEASE NOTE: Native Lighttpd Windows builds are available at http://en.wlmp-project.net/
The last available Lighttpd for Windows build that I created using Cygwin was Lighttpd for Windows 1.4.17. Updated September 29, 2009.
The WLMP Project has released lighttpd for windows version 1.4.16.
You can download it here
Note: I have provided the windows port of lighttpd myself for the past 2 years, prior to this release. When I first starting compiling lighttpd for windows, there was not another freely downloadable public port. I provided it simply as a convenience and to give something back to the open source community.
Now that a bigger project exists to provide essentially the same thing that I was providing, I have decided to step aside and no longer build and release lighttpd for windows.