The objective section should really say exactly what type of job you want, where you want to work, what type of company you want to work for, etc... in one short phrase. E.g., given what you said above, it might be something like

OBJECTIVE: Administrative Assitant position in the Northwest New Jersey area.

Actually, you might want to look at a site like http://www.collegegrad.com/resumes/ or http://resume.monster.com/ to get some other ideas on how to improve your resume.