There doesn't seem to be much information around the internet on this subject (well at least not in English), so I thought I'd post my notes here. I've been working on a Joomla 1.5 site with a client and they needed an Arabic site put up. I initially tried to do this using Joomfish translation agent, but didn't have much luck, so in the end we decided to put up a separate site. Here's how I did it.