[gyardley]

It's not impossible but pretty unlikely that you're going to be able to join something really early-stage as a liberal arts major fresh out of college.

Join a larger startup that needs people to do joe jobs - customer support, account manager, etc. Suck it up, work your ass off, learn all you can, and get yourself promoted to something interesting. (Larger startups are still fairly fluid - at least compared to the broader corporate world.) Product management worked for me, but your experience might vary.

Once you've got a couple years of experience, and you've done something a little more meaty than entry-level work, you'll have something more to offer an early-stage startup.