Installation on XAMPP server

[eluser]Unknown[/eluser]
I am new to CI and trying to get it going on my XAMPP server on a Windows XP machine.
Apache and MySQL are running as expected.

It was unclear to me where to put CodeIgniter.
At present it is located at F:\xampp\htdocs\codeigniter.

Based on some info I found in the forum, I put folders for the website, www.CIDemo.com, in a separate application folder, F:\xampp\htdocs\codeigniter\system\application\CIDemo.
I copied the config, controller, etc. folders under the application folder.

My goal is to have separate folders for each CI website.
I also have set my hosts file so that the website URL is 127.0.0.1 www.CIDemo.com localhost

In the config file I have $config['base_url'] = "http://www.CIDemo.com/";
I also have a folder for the website at F:\www\www.CIDemo.com.

Should I put the codeigniter files there? My instincts are that the index.php and config.php files go there

This question arose because when I launched http://www.cidemo.com the "Welcome to XAMPP" window appeared.

Thanks