Nam Et Ipsa Scientia Potesta Est » Blog Archive » Converting a UNIX .COM Site to Windows
http://www.softimage.net/2009/05/09/converting-a-unix-com-site-to-windows/ Notes from Hotmail team about conversion of hostmail apache/bsd -based webfarm to windows 2000. (they have converted CGI to ISAPI filters running on IIS 5.x )