You need the server software first. Once you get the server set up, you can copy your save to the server.
In your saves for Minecraft, copy the world that you want to make into a server world. Be sure to copy the entire folder. Open your server folder and paste it there. In the server properties file, change the name of the server to the name of your world's folder. Then launch the server and it should be your exact world.
Sorry it's probaly not possible ):
he doesn't have a server, he plays minecraft on a local, single-player world.
To make a LAN server, there should be a button in the menu. The join, you go the the multiplayer button in the main menu. If there are any that you can join, it will tell you.
You need the server software first. Once you get the server set up, you can copy your save to the server.
In your saves for Minecraft, copy the world that you want to make into a server world. Be sure to copy the entire folder. Open your server folder and paste it there. In the server properties file, change the name of the server to the name of your world's folder. Then launch the server and it should be your exact world.
Yes, by default the world will save when the server stops. I have found even when the server crashes, it will still save the world. Any issue involving the Minecraft server saving is 9 times out of 10 probably not the server, rather something else (i.e. griefing - or when a user destroys creations by another user).
For single player, maps can be extracted to %appdata%/.minecraft/saves. For multiplayer (provided you're the host of the server), maps should be extracted to your server folder, with 'server.properties' edited in Notepad to reflect the world map's name.
Shut down your server. Then open McEdit and open the level.dat in your server's world folder, just the same as if you were opening a level in your saves folder for single player maps.
To use multiplayer in Minecraft, it depends on whether you have the free version, or the full (premium) version. I don't think you can do it on the free version (I am not sure, as I myself have the full version), but, to do multiplayer on the full version, you must click 'Multiplayer', and then you must type in the IP address of a server, on which you are whitelisted. IP address-the name of a server that allows people to access it (example: 255:78:61:5) server-an online Minecraft world which enables Multilpayer, run from one person's computer whitelisted-you must be whitelisted (on a special users list) to access some servers. Some servers don't use whitelisting, although most do.
Sorry it's probaly not possible ):
he doesn't have a server, he plays minecraft on a local, single-player world.
To make a LAN server, there should be a button in the menu. The join, you go the the multiplayer button in the main menu. If there are any that you can join, it will tell you.
Not on single player. On Multiplayer you can though.
The most awesome Minecraft server out there -- The World's Best Towny Server!
LAN world