IW4M I used to get setting up game, 20% through the map load, here at rev I'm getting awaiting connection 2, and then the game freezes, iw4m.dat stopped working, they tempted to provide invite msg and friend facility..screw that I can't even install IW4M back T_T

What you mean you can't even install 4D1 anymore? These are the files I have in my MW2 directory, note that I'm using the manual install though

PS: Ignore my broken icons and the folder 'movieplayers'

Try to use a fresh IW4 installation from your Steamaccount and use this installer: http://fourdeltaone.net/iw4m/InstallIW4M.exe