According to the O'Reilly Port 25 blog, there's been a new release of the FastCGI component for Microsoft's IIS web server - FastCGI 6.0 - and how it works with things other than IIS7 and Windows Server 2008.
f you read Sam Raimi's How open source has influenced Windows Server 2008 and Dominic Sartorio's Dominic Sartorio on SpikeSource and Open Source Interoperability blog entries on Microsoft’s Port 25 site, you might wonder if FastCGI for PHP only works with Windows Server 2008 and IIS7. Fortunately, that is NOT the case. Head over to http://iis.net/php where you can find and download FastCGI for IIS 6.0 on Windows Server 2003.
He also points out a video tutorial from Microsoft that can help you get this latest version og FasctCGI up and running on your system.