La Distribution is currently a non-stable software, be sure to always have backups and avoid installing it in mission critical environments.
You need an Apache hosting with PHP 5.2 and mod_rewrite enabled.
Installation
Get the file on the URL below:
http://ladistribution.net/installer/installer.txt?rev=407
With FTP for example, place it on your web root and rename it installer.php.
Verify that your web server has write permissions in the directory where installer.php is.
In your web browser, go on the URL to execute the script:
eg: http://my.hosting.com/installer.php
If everything goes well, click on the link “Go Admin”.
Post Installation
At this step, you will be asked to create the first user, this user will be the default administrator.
After that, it's recommended to add a MySQL database connection through the 'Databases' menu entry.
That's all for now, enjoy!