A question we've asked, as well as seen come up over and over again with COD Black Ops is: "Can I play 4-player split-screen against bots"?
Many of the forum posts incorrectly say that you have to have Xbox Live and that you are limited to two-player split-screen if you want to play against bots.
The problem is, people confuse "Combat Training" with playing against bots. True, there are bots in Combat Training, but there are OTHER bots in COD Black Ops as well!
For me, personally, I like to have some buddies who don't have their own XBox come over once a week and play Call of Duty. But it gets old playing the 4 of us against each other (especially since the skill levels vary WIDELY!) With Black Ops, we can split the screen four ways and play on the same team, against multiple AI opponents.
In the Multiplayer screen, choose Local Split Screen. Then Edit Game Options. Where it says "Friends", set that up to 4 (it defaults to 1). Where it says Enemies (which is "Disabled" by default), crank it up to as many as you want to oppose. There are limits to how many you can fight, based on how many friends you have.
There you go! Now you can split screen 4 ways and play against bots. You can even set the difficulty of the bots! (Recruit, Regular, etc.)
Hope this helps you enjoy the game more!
Linda - http://how.best-free-information.com - The "How" Blog