It’s simple, instead of the process of installing PHP, MySQL, assigning permissions and all the debugging that many of us have gone through, Microsoft has come up with WPI, or Web Platform Installer.
Amongst other web applications, WordPress is the most popular and it makes the install on Windows as simple as a few clicks.
So far I’ve tried it on Server 2003 R2 and Server 2012 R2, both with instant success.
It’s available at: http://www.microsoft.com/web/downloads/platform.aspx