Setting up PHP-ISAPI on Windows Server 2003 June 20th, 2009
Preface:
I showed you here how to set up PHP using the CGI executable. Since then I’ve learnt that the ISAPI DLL may be faster and more secure, so this tutorial will show you how to set up the ISAPI DLL instead. Credit and thanks goes to Keith W. McCammon for setting this up on his website, http://mccammon.org/php/iis6_install.php . Made visual with permission from Keith. Something to note is that these directions had in mind default (unmodified) ACLs/Permissions.
Method:
Unzip the latest PHP ZIP file to C:\PHP, and copy php.ini-recommended from that folder to C:\windows\php.ini, then copy php4ts.dll to C:\Windows\System32

Load IIS from the Administrative tools in the Control Panel by clicking Start -> Administrative Tools -> IIS Manager (or loading the Control Panel, entering the Administrative Tools folder, and double clicking IIS Manager).

Click the name of your computer then click “Web Service Extensions”, on the left side of the main frame you will see a green arrow pointing to a link that says “Add a new Web service extension…”, click that link.

Set the extension name to anything you’d like, put C:\PHP\sapi\php4isapi.dll as the Required file, also check “Set status to allowed”

Go to the directory you’d like to configure PHP for in the IIS Manager, right click it, and select properties

Click the Create button, set the Execute permissions to “Scripts only”, then click the Configuration button

Click Add. For the Executable put – C:\PHP\sapi\php4isapi.dll for the Extension put “.php”, set the verbs to all, and make sure the bottom check boxes are checked

Click OK and OK
Gud Luck!
Thanks to http://www.visualwin.com/PHP-ISAPI/
Setting up PHP to work on Windows Server 2003 June 20th, 2009
he following things are pre-assumed:
1. You are running Windows Server 2003
2. IIS 6.0
3. You have installed PHP (http://www.php.net) to C:\PHP (installation issues are at the bottom of this page)
4. You are using default (unmodified) ACLs/Permissions
Update: Tom McDermid has brought to my attention that in the PHP 5 line, the EXE name is “php-cgi.exe” instead of “php.exe”, so when installing PHP 5, remember to replace “php.exe” in this tutorial with “php-cgi.exe”
Load IIS from the Administrative tools in the Control Panel by clicking Start -> Administrative Tools -> IIS Manager (or loading the Control Panel, entering the Administrative Tools folder, and double clicking IIS Manager).

Click the name of your computer then click “Web Service Extensions”, on the left side of the main frame you will see a green arrow pointing to a link that says “Add a new Web service extension…”, click that link.

For the Extension name put something like “PHP” in and for the Required Files put “C:\PHP\php.exe”, also check to set it to allowed

Now load a command prompt (Start->Run… type cmd) and type “md c:\inetpub\wwwroot\phpscript”

Back in the IIS Manager double-click “Web Sites”, click “Default Web Site”, right-click the directory “phpscript” and click properties

In the new dialog click Create then Configuration (Configuration will only become enabled after you click Create). If you don’t see .php listed then add it by clicking Add… and setting the following

Click OK and OK and you should be set to run your PHP scripts
Installation issues
Q: I tried installing PHP and got some error about there not being an OCX or something, either way, now I can’t execute my scripts
A: The error you received was stating that an OCX control (ActiveX) that the PHP installer uses wasn’t found, don’t worry, that’s the reason I wrote this tutorial
My reasoning
Q: Why do you use the Command prompt to make directories when you can just load Explorer and make it that way?
A: It’s much simpler to do in Command, that’s why I do it. Also, it makes you look smarter, which is a good thing in general, especially when you’re working on a Server
Thanks to http://www.visualwin.com/PHP/
Enabling ASP June 20th, 2009
Preface:
ASP and ASP.NET are NOT! the same thing. Some people enable ASP.NET hoping that ASP will work also, this is just not the case. IIS 6.0 comes with ASP disabled by default, and this will show you how to enable it.
Method:

Load IIS from the Administrative tools in the Control Panel by clicking Start -> Administrative Tools -> IIS Manager (or loading the Control Panel, entering the Administrative Tools folder, and double clicking IIS Manager).
Go to the Web Service Extensions tab, click Active Server Pages, then press the “Allow” button on the left

Your ASP pages should now work
Thanks to http://www.visualwin.com/ASP/
