You can just apply for a position as a Nurse Tech on any of the floors or a Unit Asst. in the OR, if that's where you're interested in working. Contact HR at the hospital.
And to answer the second post, HSS is second in the country for orthopedics and third in the country in rheumatology. They are also first in the Northeast in ortho also. It is a good place to work, if you are very much interested in ortho and just to get your experience in general.