Installing Joomla! 1.5
From Joomla! Documentation
The "J1.5" namespace is an archived namespace. This page contains information for a Joomla! version which is no longer supported. It exists only as a historical reference, it will not be improved and its content may be incomplete and/or contain broken links.
Install Joomla on a hosted server
Installing Joomla! can be easy to do -- especially on a localhost environment. Sometimes, though, issues at your Web host can make installation very challenging. Make certain you take advantage of the support your host provides. In the end, they are best able to help.
Install Joomla! on a localhost
The easiest way to get started with Joomla! is to install it on your desktop computer. There are a couple of ways you can do that:
Method one: Watch this video entitled How to Install XAMPP and Joomla! v 1.5, by Andrew Altamirano (slogen123), where he shows you how to download and install XAMPP as a local server and then install Joomla!.
A localhost is a great way to learn how to use Joomla!, to try extensions out in a test environment before updating your live site, and for first testing out upgrades. Learn to use a localhost right away. It will be well worth your time.
Use the Joomla! v 1.5 Installation Guide
All Web host environments are different. Check out the Joomla! v 1.5 Installation Manual for a detailed set of installation instructions.
Ask questions in the Installing Joomla! v 1.5 forum.