Joomla Migration from 1.0 to 1.5:

The new enhanced Joomla 1.5 Stable has released, those who are willing to change Joomla 1.0 in to 1.5 can change it easily, the process is very simple and it only requires a few small changes in the Joomla templates code. How easy it is will certainly depend on how your Joomla template provider has coded your .php file. From my experience some of the Joomla templates out there have some pretty scary coding and can take a long time to find anything.

The following four steps should be followed for Joomla Migration from 1.0 to 1.5 they are:
1. Change or add the head of your document with the code below. ATT: This includes the latest changes made to correct the SEF issues with the previous RC release. After finding replace all of the top code in your index.php code down to the tag
2. Replace all php codes relating to modules.
3. Replace the main body code
4. Rename the template_css.css file in your /css folder to template.css.

The migration from Joomla! 1.0 to 1.5 is handled for the most part automatically in two stages. The first stage is the export migration component for Joomla 1.0 and the second stage is the import or migration phase of the Joomla 1.5 installer. The system is automated due to a large number of changes that make data slightly incompatible between Joomla! 1.0 And 1.5, such as parameters for menus and content items. Joomla Migration from 1.0 to 1.5, Joomla 1.5 does not provide an upgrade path from earlier versions converting an older site to a Joomla 1 5 site requires creation of a new empty site using Joomla 1.5 and then you can use Joomla 1.5 converted version.