(adsbygoogle = window.adsbygoogle || []).push({}); First get two xbox live gold accounts on your xbox.

Get a modded name for one of them.

Go to the main menu of black ops and log onto your account that you don't want the modded GT on.

Go into Multiplayer and Xbox Live then to a player match.

Now take the other controller and press "A" in the lobby to sign in for split screen.

Log the controller into the modded GT and it will send you back to the menu before the lobby. Go back into the player match

Take the controller that will control the modded GT and press "A" to "play" and it will come up with a sign in screen. Log in to your Xbox live gold account that is compatible with the modded GT and it will come up with the modded GT.


CONTINUE FOR THE MORE ADVANCED TUTORIAL TO GET BOTH LIVE ACCOUNTS WITH A MODDED GT

Have the account that doesnt have a modded gamertag sign out and it will send you back to the menu before the lobby again

go back into a player match.

Now have the unmodded account press "A" to sign in and log into the account modded gt that is compatible with this account

It will send you back to the menu before that lobby again. Simply enter a player match once more.

Now press "A" to play and the sign in to the unmodded account again.

Now both accounts will have modded gamertags.

No problem man