Testing server/root folder?

Alright, so I’m using dreamweaver to edit all my site, however to make many parts of it function(such as the mysql part) it asks for a functioning testing server. Whatever I point it at it gives me the error that the folder does not contain mapping to the correct file, even when I point it at what I believe to be my root (although I may be getting my root wrong, :P)

Cheers! :smiley: