Hey guys, I am pretty new at ArmaHolic forum.. I downloaded few mods from here and from other sites like:
FPShelper,
Dynamic View Distance[DVD],
And other mods for extra Frame rates of course :\

And After I checked the whole internet, I didn't found answer to my question.
Everytime I'm entering to a Multiplayer server, I get back to the server list and I got an error -
something like a "Please remove listed files or install additional accepted keys".

I remember that when I downloaded this mods, at every folder was the folder "Keys". So I take the folder "Keys" from the mod, and combined It with the folder "Keys" inside the Arma II Operation Arrowhead.


And now everytime I entering to my Arma II OA I get an error after I get in a Multiplayer server.

Please help me! without this mods, I can't even play Arma.. It's soooo laggy...

By the way, sorry for my bad English.

Please remove the caps from your above post, it looks as if you are screaming to our members and there really is no need to do that.
Also, why the complete post in bold? Are you afraid our members suffer eye vision issues?

Those servers do not allow the addons you are using, thats why you get that message. Remove those addons and you can join those servers.
Many servers only allow specific addons, those are mostly listed on their website/servername.
Some public servers may allow any addons but those will be infested with little kiddies feeling the need to execute their sorry little scripts and cheats to take away other players fun.

....

Thanks, I will try to check how to edit .cfg.. But I can't found something that will help me increase FPS and reduce lags..

Well, first you should try to change the settings in-game and maybe adjust your GPU driver settings.
You can use those addons for singleplayer but as written many servers allow only specific addons (for security).

Why don't you post the settings you use right now + your computer specs. Maybe the people here can help you getting your game to run a little smoother?

I'll do it. thanks..