F32

Hi everyone, hopefully you'll be able to help me! I just got my first PC flight sim, a second hand copy of WOE cold war from a friend. It runs fine on my machine so I decided to download some extra content. I found the column5 site and downloaded the Nato fighters. I've unzipped and installed it but when I launch the game there isn't any change, the additional countries and aircraft don't appear in the drop down menus. If someone could kindly explain to me what I'm doing wrong that would be great as I'm pretty sure it's user error on my part!