Internships during high school?

I'm currently a Junior in HS and I'm looking to try to get an internship (paid or unpaid) for over the summer. I'm pretty dead set on a career in computer science and I've learned a variety of programming/scripting languages and made some projects, so if I could get an internship where I actually touch some code that'd be really awesome. Has anyone done something similar, and can offer advice or their experience?