-start steam+MW2
-then open VAC Chaos
-it will give an error saying that VAC has been detected but your safe now
-hit the load button and MW2 will start again
-hit TAB or Alt+TAB to get to desktop
-use any hack or injector that you want
-HAVE FUN WITHOUT GETTING DETECTED
hope this was a good explaination ... ? :P even from a choob