I will try and help you out later tonight if I can, gotta buy groceries after work (I hate errands) pm me your msn or some kind of chat program information and I will shoot you a messege.
it looks like you have your launcher configured to start the server in a screen (which is a good idea), when it is saying no screen to be found its basically saying the server is offline becuase there is no screen to resume. once you launch the server and are placed in the screen you can exit the screen with ctrl + a + d, and resume the screen with screen -r. when you launch the server what is it saying?
if you have a custom domain name you can update the dns to point to your Ip, or you can just give your IP to your friends, its really whichever you prefer as they will be able to connect either way.
It would appear so, it doesnt matter where you host, place either of these two options on the server you are running, which as you say is XeonServers, do you have full root access? or is it like a game hosting service? if its a hosting service ask them to install that backup mod and backup to a network folder of your choosing (they might charge extra I have no idea)
copy the "world" folder from the old exe location, and move it to the new exe location, (delete the world folder in the new exe location before moving world from old location). Unless you change the name of the default world.
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