Installation of InterJinn should be very straightforward and fast. The most difficult part is configuring the framework for your needs and ensuring that you have permissions and ownerships set up properly.
To install just untar or unzip the archive into the directory where you would like to have InterJinn installed :)
cd /foo/bar/destination tar zxvf interJinn.x.x.x.tar.gz
cd /foo/bar/destination unzip interJinn.x.x.x.zip
That's all there is to it... now click on the configuration link to learn how to make it work.