Being one of the top salespeople in my company, I'll give you a few tips:
Start off with an ice breaker, build rapport with the prospect, an okay ice breaker is better than no ice breaker. An ice breaker should be a simple question: "How are you doing today," or a question about something in their office or something they're wearing like- "are you a golf fan?" or "are you a red sox fan."
Be sincere.
Control the conversation with questions, and listen intentively.
All the best salespeople I know are good at asking questions and listening.
Be enthusiastic about what you're selling.
Use the "SEE" factors-
Smile
eye contact
enthusiasm
Know your product inside and out. (This is a must).
Selling is not telling. You should only be talking 25-30% of the time.
Continue to build rapport through the presentation, and maintain your enthusiasm.
Use trial closes (don't worry if you don't know what this is) and never quit after the first "no."
Two good sites to check out:
www.tomhopkins.com (the art of selling anything). This is the best sales program you'll find, but it teaches you how to be a very manipulative salesperson (just to warn you).
www.briantracy.com (psychology of selling). This one teaches you how to properly sell, and ethically sell.
Good luck!