Sales Help

I work for a small distributor of software/video games and the latest Mexican/American titles. I've recently begun helping out with the sales aspect of it and have stage fright, cold feet just don't like making cold calls I guess. We're trying to tap into nontraditional markets for our product so I'm supposed to call on local chains to sell. I don't know what to say in the opening 30 seconds to grab their attention beyond introducing myself, company then what? Help.