Technical support >> How to migrate joomla 1.0 to 1.5?
/forum/98/775/776

Here are some links may help you: http://docs.joomla.org/Migrating_from_1.0.x_to_1.5_Stable You can migrage whole content of website, but the templates and components etc may need to be re-installed since they may not compatible with new version of joomla.
Author: Dude
Posted date: 2010-01-07 06:09:22