WordPress.org

IMPORTANT: This plugin DOES NOT work on a windows server, as there are no commandline tools to unpack archives, but it works great when connecting from windows to a linux/unix server.

PREREQUISITES: Make sure your server has the following tools installed and readily available within the search path: "tar", "gzip" and "unzip". Also, set your wp-content/plugins directory to world-writeable (chmod -R 777 plugins) or at least writeable to your httpd user.

Carefully follow the following steps as it is probably the last time you will ever do this:

1. Upload the plugin package to your wp-content/plugins directory
2. Unzip the package (unzip pluginst.zip)
3. Go to your "plugins" administration page and activate the PlugInstaller plugin