If you try to edit the global configuration in Joomla and receive the message
An Error has occurred! Unable to open configuration.php file to write!
On your serverset the permissions for the configuration.php in the root of the website to enable modify permissions to the Internet guest account.
You may also get an error uploading images
Warning: Failed to [...]
This covers setting up a Joomla website on a Windows IIS server
You will need to have MySQL installed on the server already.
If you do not, use XAMPP to load and configure the packages required from from http://www.apachefriends.org/en/xampp.html
See the tutorial below on setting up an IIS website
Download the latest version from http://www.joomla.org/download.html
Unzip it to the website [...]
If you have installed Joomla, removed the installation folder then attempt to go to the website directly and you receive the error:
No configuration file found and no installation code available. Exiting…
Go to the root of the website and rename the file configuration.php-dist to configuration.php