To migrate a site from Joomla 1.5 to a new CMS (or Joomla 3)

input: website pochka.org on Joomla 1.5 (mysql, virtual machine with PHP 5.2.17 deployed on a vps, but the hosting we would like to change haringay)

Task: to migrate the site together with the content and design to a new CMS (or the latest version of Joomla).