Crism. What is your experience in aviation so far? You need to do some research on how things work in this career. You're in the right place. I'd also suggest jetcareers.com, which is more set up for a newbie. Anyhow, not being critical, but you asked a question that most people in the biz are going to find very funny. Some will find it sad.
But I have to say I've never heard of someone asking if he could work as an airline pilot just for a summer. That's a new one.
Go to the home page of jetcareers.com and read about how things work. Then, read the "perspectives" links about how other guys have done it. You'll be able to answer a lot of your own questions that way.