I know then it will ask you to pick another profile thats when you go to your main one and your main profile name will be modded thats how it works.

Thanks for the help maybe il send you a friend request on xbl sometimes , and i guess moding gamerscore is the same i just drop it into the profile folder

No its different and I will tell you how to do it if you send me a friend request my GT is ADTR ii N u K e

You haven't hash block calculated and hashed and resigned properly.

AoG_Pestilence wrote Okay But then would that make it so i can only go on the modded 1 on multiplayer if it says im not allowed to play online?.

Right say u got a modded profile like ^Press[]ForSex or something yh, sign into that account it should bring up choose ur avatar, just press the middle button the go on mw2 xbox live and it should say "ur profle is not allowed to play on xbox live so then,go onto your account which ur put into the gamertag mod and then it should come up with ur modded name and its not perminant u can just play without the gamertag mod by not signing into your Account that isnt allowed on xbox live,

did this help?

Yeh thanks guys =) all this stuff as helped ALOT.!