I believe after you reach 10$ in revenue you are allowed to choose a payment method from within your account setup. Claudio Izzi System Administrator http://www.learningshells.com
It gets sent automatically... go to "View Payment History" below Today's Earnings. All the details are there.
Once you reach the minimum of $100 mark.. Google team will process the check. You can see the status of it in the 'payments shedule' page. ... it'll take a bit more time to come if it's your first check. good luck.