Frightening...
 

I have used mods before once on another game and it completely killed it maybe i did something wrong. Is there a specific way to install these mods or put them is a folder to work or not kill it? Any help would be appreciated!

Instructions can be found at the place you downloaded the mod or in the corresponding readme.

Not sure which game and mod your talking about, but if its a mod for Men of War then you have to create a folder called "Mods" in your Men of War main install folder, in that new "Mods" folder is were you put your mod folders, then go to options in the game and click on the mods tab and the mods should be listed and you just activate or deactivate the mod you wish to use.
Hope this helps.
Cheers.

Call of Duty, the original game