How to become the host ?

Hi all,

I was wondering if it is still possible to become the host of a game forced. I wanna use my lagg switch in Call of Duty Modern Warfare 3, and that is only possible if everyone is playing via me. The host tool from Ninja doesn't work anymore, or the download link is corrupt. If there is a way to become the host, please let me know, i cant wait to use my own lagg switch and kill al the players

( Couldn't find some threads about this that was updated, so thats why i created a new one )

Greetings,

Algovec