I'm not sure if it's the one you're looking for, but take a look in this thread: https://www.mpgh.net/forum/showthread.php?t=855843
Does anyone have the mw2 engine owning aimbot?
I'm not sure if it's the one you're looking for, but take a look in this thread: https://www.mpgh.net/forum/showthread.php?t=855843
Well it's basically that, but designed for mw2.
Looks like that one doesn't include an MW2 hack. You'll have to wait for one to be released.