In the skill_caps table it's this.
Code:
skillID | class | level | cap | class_ |
In the skill_caps text file it's this.
Code:
class | skillID | level | cap | class_ |
Also, I don't believe Pick Lock, Sense Traps, or Disarm Traps even work, I've never seen them used, and there's a #command for Pick Lock. You could always use Perl to set their skill level to 1 upon logging in, however I wouldn't know if that would allow them to level those skills up.