I have been involved in many interviews from both sides of the table. It seems that quite often, ones qualifications are secondary to how well one comes across as someone they would like to work with even if it meant they'd have to train you a little.
Don't make them drag answers out of you. Do some research of the Company and of the position you are applying for so that you can use this information to better understand what they are looking for in a candidate and to explain to them why you would be the right choice. It can be helpful to weave this information into your interview. For instance if you find out that the company has recently become involved with shipping hazerdous waste materials, you could mention that although the position you are applying for is primarily clerical, you are quite familiar with local regulations regarding the shipment of hazardous waste and have attended 88 hours of State sponsored training seminars on the subject. Or Later at the end of the interview when they typically ask you if you have any questions, you could say " I read online that you will be shipping xyz chemical to the recycling plant in Ohio, and I wondered if my Haz Mat certicication and experience with State shipping forms would be relative to my duties.
If you have to give a "no" answer, replace it with a positive alternative. Q. Have you ever been a Project Manager? "No, not offically, however I was responsible for monitoring the progress of several "in house" projects, which involved record keeping, quality control and scheduling etc."
When you answer yes to a question, follow the answer up with an example. Q. Have you you ever been a supervisor? " Yes, in fact I currently supervise 3 full time employees and 2 seasonal workers. Each of them report directly to me and I was heavily involved in their hiring process.
Don't be too grim...look for a way to make them chuckle (if appropriate) and remember you. When being introduced to the last interview panel I was in front of, prompted by a comment one of the interviewers made, I said with a mock British Accent "Take it easy on me today folks...I bruise as easily as a peach, don't you know" ( you had to be there...it worked in that situation, everyone laughed. P.S. I got the job even though I don't have an Engineering Degree. I found out later that even though my qualifications didn't quite match what they had in mind, my experience did...they liked my interview and thought I'd fit in well with the organization. 4years later I'm still hanging in there despite cutbacks etc)