Do you got the error when you install “Wordpress” something like “Sorry, but I can't write the wp-config.php file ”
For this issue you need to give access to IIS to be able to access the directory where your script files located is.
Go to “C:\inetpub\wwwroot” and open the properties and go to security tab
choose the IIS_IUSRS and Edit their permission and Check the full permission for them.
This way you are able to make a installation of wordpress in IIS.
This trick also can be used when you have installed some database software run on Web interface (inside your browser).