Hi Kev, welcome to X-Cart! I suggest starting with this thread:
http://forum.x-cart.com/showthread.php?t=21529
The thread you just posted in is over 2 years old, so anything in that thread is probably not relevant to your version. Be sure to pay attention to the dates of posts. This is probably best off in a new thread all together, so I have moved it to one.
Do you have the Smarty Plug-In for Dreamweaver? You will need that in order to view the templates correctly.