not sure if this is posted in the right forum, but i guess a mod will move it if it aint.
Found a brilliant Live Customer Support script which is very easy to intergrate into x-cart called Help Center Live.
Best of all its FREE ! and comes with a optional windows application so you dont need to keep your explorer window open.
the url for the script is:
http://www.helpcenterlive.com/
and a demo of it, can be see on my site at
http://shop.cglass.co.uk/customer/