JTag WIKI that component for creation WikiPedia base on MediaWiki from http://www.mediawiki.org/wiki/MediaWiki
for Joomla 1.5

There is documentaion for installation

JTag MediaWiki Bridge is a Joomla bridge to Mediawiki. It lets you integrate the famous Wikipedia appliaction to your Joomla site and provide a single user access to both Joomla and Mediawiki.

MediaWiki can be found at http://www.mediawiki.org/wiki/MediaWiki
for Joomla 1.5

Instruction install Component:

1. Install EasyInstall Client.

2. Go to addons list(Components->EasyInstaller->Add-ons List).

3. Check necessary component.

4. Click "Install" on toolbar menu.

5. Install is finished.