by Guillermo Madero S..
Hi Cesare,
When doing the upgrade, you should have renamed the original moodle folder (e.g. moodle_old), unpacked the new code and started the installation. Once finished, you can install the new plugins.
Hotpot should be installed under the mod folder.
http://moodle.org/plugins/view.php?plugin=mod_hotpot
http://docs.moodle.org/19/en/HotPot_module_for_Moodle_2.0
The Journal plugin:
http://moodle.org/plugins/view.php?plugin=mod_journal
Lams (Learning Activity Managment System) is a course format, and it has been removed from M 2.x.