How do I move my forum to a new domain/host?
 

I'm trying to move my webforum from one domain/host to another. I copied all "public_html" files to the new "public_html" directory. However, I get this error. What does it mean?

Secondly, if there any files inside the charge inside the "public_html" folder that I need to change to let it know it's on a new domain/host?

Here is the error:
(Sorry, it won't let me use the attachement button)

http://i42.tinypic.com/213m4ae.png