What you will need:

A USB Flash Drive

Programs Needed:
EzGT: [ Register or Signin to view external links. ]

UsbExplorer: [ Register or Signin to view external links. ]

Modio: [ Register or Signin to view external links. ]

1.Put your usb in your xbox
2.go to system settings on your xbox
3.then go to memory
4.go to hardrive
5.then gamer profiles
6.then click the gamertag you want to mod and click move and move it on to your usb
7.Now go to your computer and put in your usb wait 30 sec to let your computer read it
8.then open usbexplorer
9.click file at the top left corner and click open device
10.and your going to see a bunch of letters and numbers keep clicking it until you cant anymore
11.move that onto your desktop then open up EzGT
12.click the icon on the top left corner and open your gamertag on your desktop
13.mod it how you like then click save
14. open up modio and drag your modded gamertag into it and is should bring it up and it should have the monkey gamer picture click rehash and reisign and go back into usb explorer and click open device
15.and click until you cant click anymore and drag the rehased profile into it
16.take out your usb and go to your xbox
17.go to system settings and memory and go to usb and transfer both the profiles onto your hardrive

How To Use It:
1. Go On call of duty
2.sign into the modded profile
3.go to multiplayer
4.click xbox live it will say to sign in sign in on your regular profile but dont sign out of the modded one
5. and thats how you do it