If your one of those who need to development and setup a Windows/IIS/PHP setup, there is a basic informational article posted on php|architect.
Using PHP on Windows
http://c7y.phparch.com/c/entry/1/art,php_on_windows
Microsoft FastCGI
http://www.iis.net/downloads/default.aspx?tabid=34&g=6&i=1521
Want to try URL Rewriting for IIS and PHP to have clean URLs in frameworks such as Kohana, CodeIgnitor, CakePHP, etc., there is a basic free version of ISAPI_Rewrite available.
This is simplified edition of ISAPI_Rewrite. It does not support per-virtual-site configurations, proxiing, metabase monitoring and automatic cache cleanup but all other features are supported.
Want to use MemCache with IIS and PHP, there is a Win32 port available at ...