A tutorial explaining how simple component for Joomla! CMS 1.0 works, and how to create a component. One may wonder why to write about version 1.0 of Joomla!, when version 1.5 is almost ready (as of January 2007). I think version 1.0 is still a very good framework: one can get to know how Joomla! works, extend the PHP knowledge, and prepare for Joomla! 1.5, which is a lot different and more advanced. And since there rather will not be upgrade possible from 1.0 to 1.5, just migration (hopefully a fast and easy one, thanks to great developers), there may be still a lot of existing web sites working on Joomla! 1.0 for quite some time.