HOWTOFIND: unpack your data pack with the 2munpacker or whatever, it's on this forum use the search button. Then go to data/data/share/skill and find the skill you want. Copy the index (example; Index,829) and then on winhex press ctrl+f and search the index.
Then you might need to press sometimes f3 to go to the next search because other things can also have index,829 but I never had that. (tick on, whole words only)
When you're there use the skillhack tutorial it's not hard.