Although you'll move out of the Rockefeller College dorms at the end of your sophomore year, you'll remain affiliated with the college until you graduate--and you'll even get your diploma here (unless, of course, you draw into housing in another college for your junior or senior year). Rocky will remain your home for general advising: Dean Avens will conduct your junior and senior audits, and will remind you of any remaining university requirements that you need to fill.
Your department representative will approve your course enrollments and sign off on drops of departmental courses, but we'll be here to advise you on any non-departmental academic issues you may encounter. (Seniors, you'll also need Dean Aven's signature in order to drop any course after the first two weeks of the term--he checks your record to make sure that dropping the course won't put you in academic jeopardy.) We're also the people to see about Dean's Date extensions (including independent work), changes of concentration, and other unusual or complicated situations. If you're uncertain about who to see concerning an academic issue, get in touch with Dean Avens: he will be able to help you, or refer you to the right person.
You may also want to start thinkinking about your post-graduate plans, especially if you have a particular career path or graduate subject in mind. Career Services is a good resource, as are your departmental and college advisers.