take a shotgun to it
you cant without mods :(
Unfortunately skyrim itself is not multiplayer but there are mods out there attempting to make it that way
In single player you cannot open the chat box without mods. In multiplayer you press 'T'.
Survival and creative single and multiplayer
Rei's Minimap
You can download minecraft plugins from planet minecraft minecraft forums bukkit (for multiplayer) mods for minecraft.com mods for minecraft.net
There are definitely mods for that, like moreores, for Bukkit.
All mods that dont add items/blocks to the game, or spawn items (cheat in anyway) will work
Because there are no game legal mods and it is just a form of cheating
Getting onto Minecraft Multiplayer is very simple. All you need to do is when you get onto Minecraft you click "Multiplayer" instead of "Singleplayer", "Mods and Texturepacks" or"Options" and type in the Multiplayer IP (which you can get from the Internet or a freind) and click "Connect".
Don't do that! You could get banned from the server as most servers dislike mods. Just be on the safe side and only use it in single-player
Yes, some may affect the game and its performance. If you have a slow computer, I don't recommend that you download too many mods.