What if I don't have an idea?
radu_floricica: Ok, a strange ideea: if you want to do a startup but don't have an ideea you like, you can try something ourside IT. I did it for about a year (a local courier company). It failed, of course, but I learned _a lot_, about startups, about people, some about myself. And more importantly, one year later I have my passion about programming back. 
Important stuff: don't sink too much money into it, and try to use it to make connections, not brake them.