Is it possible for me to install just the one to one chat rather than the full system?

I use it on my site Buzz50.com but whilst re-building the site and using 6.3.1 on a Joomla 1.5 site with Community Builder I seem to get a full chat room facility as well which I do not want.

Any ideas please?

You can disable the chatroom easily

Go to ~/freichat/arg.php

Replace enabled by disabled in the following line

$show_chatroom_plugin = 'enabled';