You Don't! :D
No there was not ever a demo for the game
you cant on demo
no
No, there will not be a demo.
Conner there is a demo. whore
There is no demo, anywhere in the world.
There is only a MW2 demo on PSN and XBOX Live. Unfortunately, Infinity Ward have not released the demo on steam and with a month left 'till Black Ops comes out, I don't think they will.
Not yet but I'm pretty sure that there will be. The Call of Duty Black Ops Demo has been released!
No there is not
steam
no
No, it does not.