Bringing an unprepared student into the lab I'm thinking of bringing a new student in the lab. His theory background is seriously lacking. He didn't take enough math and physics classes, and has insignificant programming experience. He has a permanent position as a technician at my institution and he wants to get a PhD. 

I'm in serious need of manpower (or woman power), as what I'm doing requires a lot of computer simulations. The question is what should I do to involve this student early enough in research and keep him motivated until he understands enough to become curious? I have the feeling he wants the PhD more as a way to improve his position within the institution.

Edit: To clarify: I want the student to do all the PhD work that is required, i.e. learn the techniques, write papers, conduct independent research. I don't know how to get him over the steep learning curve at the beginning without losing him.
You suggest the individual is not 'already curious' by which I assume you mean 'not passionate'. Lack of experience can be overlooked if a student is passionate because they will work hard for the reward of learning. If the student lacks interest, it will probably be a constant struggle.