Great work! Now I have to find my old NOLF GOTY disks (as If I'm correct this won't work with the version supplied by nolfrevival).
PS: Does this works with non-english editions (in my case Spanish)?
It should work with any version, as long as there's not a mod applied. I've modified the code from official SDK released waaay back. (And if there is, it'll just override that mod.)
I'm not sure if it works with any non-english versions, as the only language that comes with the SDK is english. Give it a try! If not maybe nolfrevival can do the job!