To install Joomla! locally you have to set up the appropriate server environment as described previously.
Windows is extremely user-friendly and immensely popular. Over 90 percent of all PCs work with Windows as their operating system. Windows XP and Windows Vista are the dominating versions. Unfortunately the Apache web server and the MySQL database, and PHP are not included with Windows.
You could install each of these programs separately, or grab a preconfigured package (this is very practical and it will save your nerves).
In Windows XP and Windows Vista, you log on to your system in administrator mode. If you don't know if you have administrator rights, check your account type: click Start | Control ...