Most college students utter an audible grunt the first time the "resume reality" hits them: "Uugghhh. I gotta do that resume thing." Do you really need a resume? Yes, you really need a resume. It will not get you the job, but you will not get the job without it. Anyone who tells you that you do not need a resume is out of touch with the entry level job market. Do not depend on it to magically produce the job offer for you, but know that anytime you make a serious job contact (including networking and interviews, both on campus and off), it will be a requirement.
Do not procrastinate on this important activity. Students often tend to wait until a resume is required before developing their resume. Then it is often cranked out with just the basics in hopes that it will free you to go on to the more important steps. But if you properly understand the purpose of the resume and where it fits into the entry level hiring process, you will see that it requires a great deal more thought and preparation than just "cranking it out."
Your resume is a professional reflection of you as the potential product: professional resume, professional product; poor resume, poor product. Take the time to develop your resume as the very best reflection of you.