Any tips or comments?

My maaaaaan has an interview for a sales position in his store. He is currently a porter and basic maintenance man at a low to mid priced furniture store and through networking and hard work has been offered an entry level sales position. He has NO sales experience, and management is aware of that, and the interview is with the VP of the company!? If you are in sales, do you have any tips or advice? He is very personable, clear voiced and confident but, as said before, has no experience, so he needs to impress! Thanks guys!