If xbox360 you need to download something. (Xbox live)
you have too be signed in with other people then you can change evrything
In Call of Duty: Black Ops, to go on multiplayer you have to go to multiplayer on the menu that says: CAMPAIGN MULTIPLAYER ZOMBIES OPTIONS
You can't. I'm sure there will be a patch soon though.
When at the Multiplayer menu go to Playercard, then Edit Playercard.
Yes. If you are making the game, you can edit the game options. This includes the number of friends, enemies, time limit, and score limit (depending on what game mode you are playing).
no.
Online Xbox 360 play is not free and the online multiplayer mode of Black Ops is the only format for multiplayer
yes it will.
Yes.
It automatically comes with the multiplayer!
No
You can't change the rules if you are playing online but you can change the rules on private match and combat training.