[SOLVED]Console in MW2..help pls =D

Hey dudes!
I´m new to this side and pretty much some sort of mod noob ! xD
I wanted to ask how can i aktivate console to kick hackers and other stuff like written in http://www.mpgh.net/forum/228-call-d...kers-game.html

I am not playing AlterIwnet.. i play with Liberation on normal stuff.
Pls help!=D

My sec Question is how can i use http://www.mpgh.net/forum/308-call-d...-crossbow.html
..i mean like where do i have to put http://pastebin.com/VZ9sWDPw into?!

Sorry if this was already asked but i m new to all this cool stuff..sorry for that dumbass question <.<

Thank you so much for Reading..and thanks for help as well

if you unlock console on steam you get banned. so best to download a Host mod (like no mod) and that has a kick menu as one of the GSC's