Among other things mentioned in his his latest post Bill Staples talks about a new tool that makes the installation of lots of popular web apps (PHP and not) simpler - the Microsoft Web Application Installer.

The Microsoft Web Application Installer (Web AI) is a companion to Web PI, and provides a super easy way to download, install and configure many popular community and open source applications on IIS7. Available applications include DotNetNuke, Drupal, Gallery, Graffiti, osCommerce, PHPBB, and Wordpress, with more on the way.

You can find out more about this web installer and the Microsoft Platform tools from this page on Microsoft's site or in this Web AI forum (where you can also provide your own feedback).