[SOLVED]Banned, quick question, help please.

Ok so I'm banned on MW2 on Steam. If I download the alterIW will I be able to play online multiplayer?

Sorry for the noob question but I couldent find it anywhere, and it takes me like 6 hours to download the game so I dont want to d/l if it wont work

If you have MW2 installed you can just "upgrade" it to aIW..
No need to get the game, just the DLC and the updater (and maybe some files).

And yes, aIW have nothing to do with your steam ban.

I don't have it downloaded yet, not even steam yet. Would anyone be kind enough to help me set everything up after I download the game?