Ok pretty simple bro all you got to do is open up config.ini and put this in
alterIWnet
MW2_Modder.dll
//DO NOT DELETE THIS LINE!
You got to make a folder maps MyPatch>mp>gametypes>then your gscs. Use elitemossy v8.18 w.e release and check copy and paste the two folders in there
Open up modder.ini something like that and make sure it's like this
[MW2_Modder]
; Choose the mod to load (by numbering defined below)
CurrentMod=0
; Define your mods here... numbered from 0 through whatever..
; The value on the right of the = sign is the folder containing the mod
Mod0=MyPatch
Mod1=RealismMod
Mod2= ; etc
And to make ur screen smaller go to players>config_mp.cfg and find fullscreen and make the number too 0.
That's it any questions feel free to ask