Anvart, you are smart enough to find out how it was done if you take a look at the mod Captain America just released. He used my method:
http://www.subsim.com/radioroom/showthread.php?t=138374
Sorry if I was wrong about the zones. I don't stare at the files as much as some of you guys do and quite frankly - since I never made a mod - it's amazing I found this fix, and not some else :rotfl:
[edit] And as far as the video vs written tutorial. I can make a video tutorial in 10 mins, whereas if I had to write it down, I would spend at least one hour. That and the fact that the video guarantees succes, and written text will almost certainly raise questions. My time is precious...