Please help me out.

Hello dear users of Alter IW Net.

So I'm looking for supportful people that could help me out, I'm kinda new at COD MW2 just downloaded it not MW2 but mw2mp when I'm trying to start game (after setting my nickname) this error pops up.

I'm not sure if this is neccessery but I wanted to say that I haven't done anything else than extracted Modern Warfare 2 Multiplayer Rar, there's also aIW-DLC folder with aIW-DLC1 and aIW-DLC2, aIW-MISC rar's and there's also another rar named aIW-37a-10802. Any suggestions I've read few readme's and I guess I have to download also MW2 game so I want to make myself sure before downloading anything else or doing, dont want to mess up.

Thanks everyone for help, appreciate it!

I am having the same exact problem can someone help us?