in your image..... your trying to call the site "localhost" that WONT work from another computer.
I assume your dealing with 2 networked computers. You need to call the LOCAL ip address of your server comp from your Dreamweaver computer.
From your server machine (linux) open up a terminal window and type
su - (will ask for root password)
then
ifconfig eth0
This should give you this machines LOCAL IP address. From your windows machine type in the local ip address of the linux machine..... you should see your apache server return the index page for your webserver.
IE:
http://192.168.0.2/ or "something" like that (use the number you just found).
In your dreamweaver setup (I'm not familiar with that....) you need to change the "localhost" setting to the new
http://(your local linux machines number here) you just found.
I know that explanation isn't perfect......but maybe it will get you pointed in the right direction.