I'm trying to install PHP5 on a web server and am having some problems getting it to work correctly. Some system information: we have MSSQL, IIS, run Server 2003, and have Native Client 2005. I saw there was a driver from Microsoft but it listed a requirement of Native Client 2008, which, to my understanding, we can't upgrade to right now. I've also seen mention of FastCGI in articles I've found regarding installing PHP on Windows Servers, but am unsure if this is needed. So my question is, what exactly do I need to install to get PHP up and running on this server?