How can i increase the chances of me getting the job?

Alrite so I might get an interview at eb games at the mall and I was wondering what do you people think I should do to higher the chances at me getting the job...because I really need and want this job..any advice??

Be friendly, out going, eager about the job etc.
But don't over do it!
But yeah... just have a positive attitude =]

Be truthful about your skills. You don't want to be tested on it and look like a liar. Dress professional, sit up straight, don't chew gum, ask questions about the company to show you've been looking at their history and what they are about.