The second release candidat for PHP5 has been released on April 25 2004.

You can easily test it now on your Windows with the new version of the installer WAMP5 (Apache, PHP5, MySQL). It has completely been rebuild and is now much more stable than before :
http://www.en.wampserver.com (english site)
http://www.wampserver.com (french site)
Enjoy! ;)