Thanks to Joe Stagner (The Misfit Geek) for this information.  Looks like Microsoft is seeing the benefit of helping the open source community.

Here’s the article from Joe

http://misfitgeek.com/blog/introducing-the-windows-cache-extension-for-php/

or jump directly to the download

Windows Cache Extension 1.0 for PHP 5.2 - Beta

Windows Cache Extension 1.0 for PHP 5.3 – Beta

Enjoy!