The best place to go is located on your CAMPUS!
Go to the Career Center. This is the place to help you find On/Off-Campus Jobs, Work/Non-Work Study Jobs, Campus/Off-Campus Sponsored Internships and to help you build your resume and find your career.
Career Centers also have job fairs once in awhile, which is definitely HIGHLY recommended, especially when the economy is horrible, like now.
Take advantage of your Campus Units, especially if there's a Career Center. Personally go to the Center yourself and tell them what you're interested and they should find ways to help you find an internship that meets your needs and wants! Don't do it the lazy way by trying to find something online because something you might find could be a "SCAM". I almost got scammed into a "fake" job when I was on a serious job hunt

Siggghhh. So at least when you do it through your Career Center, you know it's legit.