Aimbot + steam?

How do i activate an aimbot through steam?

because last time i had steam, it made a iw3mp and the single player on the desctop, and it doesnt make a iw3mp on steam,

and also i just need a injector, cause i got the aimbots, BUT when i use WinJect, it doesnt work, because i activate it to the iw3mp process and then i cant find any games to play?

Please can someone help, just need a steam injector. thanks.

omg nuub use search button.. btw use Perx injector might help thank me if i helped