You don't need xbox live for cod black ops unless you want to play with others across the world. You can also play split screen with one other person and you can also play split screen with a second remote over xbox live also.
There is no call of duty 6. call of duty six is black ops.
yes its on xbox/ps3/wii/pc
yes it does
you have to be on xbox live
Yes for the Xbox 360 game you do
yes
yes you can wii playstation 3 and xbox work whoops..
Yes.
Yes, but it has to be a gold membership.
don't be a noob
As long as your xbox 360 is connected to the internet and you have xbox live GOLD membership then yes you can play on xbox live with call of duty
Yes you can play online in black ops with psn and xbox live