1) Try landing an internship with your college's technology transfer office. These guys are always connected and pitching various technologies to outside investors.

2) Get involved with your town's Small Business Administration organization.

3) Find a mentor from within one of the opportunities above in options 1) or 2).

4) Take charge. If you can get their email, email them. Most won't respond, but the smaller and more aggressive they are to get their name out there, the more likely they will talk to you or at least email you back. If that works, try asking to treat them to lunch to find out if you have a rapport with them. Trust your gut on this one, don't be blinded by your ambition to get in a startup. Maybe you won't get a job right away, but you could earn a good mentor and an additional connection.

(Worked for me, I landed an internship with Alex St. John from Wild Tangent)

Ask them.

I second this. I know it's more work, but in my experience startups are more likely to create an internship (lazily, you might say) if they find a good person rather than create the internship and then find someone to fill it. In other words, you might have more luck creating an internship for yourself than finding one.

Well, thanks. I will try that then.

I could always do that, but there's too many that I am interested in.

I was hoping for a more efficient way but I could go down that route if need be.