Starting a Robotics Club/Team

[DoronS]

I would also find out who the regional directors for FIRST are in your area. In NY, they are very involved with startup teams, and they may be able to advise or direct resources to you.
Regarding mentors, one of the biggest benefits that they bring is maturity. Because of that, one of our best engineering mentors is a med student, and another is a retired lawyer. That being said, we also have vital mentors who work in the industry, so just be open-minded about who can help. If you are looking for mentors, definitely talk to team parents and to your school's Alumni/Parents Associations.