The previous answers given here are great, but I've copied a trick from legendary investor Monish Pabrai that I've used in previous startups that seems to work wonders -- especially if your company does direct B2B sales.
Many Founders/ CEOs are hung up on having the Founder/ CEO/ President title. As others have mentioned, those titles have become somewhat devalued in today's world -- especially if you are in a sales meeting with a large organization. Many purchasing agents at large organizations are bombarded by Founders/ CEOs/ Presidents visiting them all day.
This conveys the image that a) your company is relatively small (the CEO of GM never personally sells you a car) and b) you are probably the most knowledgeable person in the organization about your product, but once you land the account the client company will mostly be dealing with newly hired second level staff.
Monish recommends that Founder/ CEOs hand out a business card that has the title "Head of Sales" or "VP of Sales". By working in the Head of Sales role, and by your ability to speak knowledgeably about the product, you will convey the message that a) every person in the organization is very knowledgeable about the ins and outs of the product (even the sales guys) and b) you will personally be available to answer the client's questions over the long run.
I've used this effectively many times myself.