That sucks man.
But (and I don't know for sure, I started my own biz 5 years ago), but when you give your notice doesn't he still have to keep you working?
I mean, you did the 'right' thing. Isn't there a law or something that says he has to keep you on for the next 2-3 weeks, and if he doesn't, he has to pay you for early termination.
(Well, actually, I'm pretty sure he does. Otherwise, whenever someone gave their 'notice', they'd just cut them loose). Too bad if he doesn't have work for you, I think he still has to pay you.
Right?