Before installing - even in automatic (browser) or manual mode - you will have to publish the Drake CMS files to your webserver.
Unzip the distribution package into a directory under your web server root. If you are using the Apache web server, this is typically c:/apache group/apache/htdocs on the Windows OS and /usr/local/apache/htdocs on a UNIX system but it may vary particularly on hosted servers and between different "brands" of Linux.
We are assuming you have established a working web server, with the necessary requirements previously detailed, and that you know where to put files to display on the web server.
If you only have FTP access to your hosting you will have to upload all the files contained in the Drake installation archive to your webserver, or else use the Veloce script.
If your host has a very strict Safe Mode enabled (a very bad and useless practice, anyway) you will not be able to upload files in folders created by any PHP script.