You can't change the rules if you are playing online but you can change the rules on private match and combat training.
You can't. I'm sure there will be a patch soon though.
There is no rules in Black ops, online you kill the opposing team or anyone or you capture flags and you get it.
You cant
No.
you can change your gun camo and your camo on your person.
you change your kill streaks before or after thegame.
Change Your Perk3
the violence settings can be changed
The call of duty world at war is not a prequel to call of duty black opst.
call of duty black ops
it is called call of duty black ops.