Some, who are experienced in interviewing, know exactly how to handle the situation. Some get a little nervous, but manage to pull it off. And then there are those who are clueless about what to say or do at an interview.

It should be obvious that you cannot show up late. It leaves a bad first impression and given that fact that several candidates are being interviewed for one job, it disrupts the schedule of the interviewer. So, leave the house with plenty of time to spare.

It should be equally obvious that you should dress the part. Office jobs demand office attire. That means a business suit, court shoes, no flashy jewelry and if you use make-up, so in moderation.

Dont wear perfume or cologne. A lot of people are sensitive to strong scents and you might just give your interviewer a sneezing fit or headache.

Dont show up with an anything less than perfect resume. Creases or stains on the paper are unacceptable. Your resume should be carried in a folder or envelope.

Upon greeting the interviewer, dont shake his hand as if you are afraid of touching him. Give a firm handshake, and if you can manage it, smile.

Dont walk in front of the interviewer. You have no idea where he is taking you.

Upon entering the interview room, dont sit, wait until a seat is offered to you and then dont slouch. There is no need to sit like a soldier, but dont get too comfortable either and resist crossing and uncrossing your legs.

Dont fidget. Interviewers know job candidates are nervous, but there is no need for putting those nerves on display.

Dont comment on your surroundings. That means no compliments on pictures of people or pets. You should be concentrating on your interviewer, not his possessions.

Dont joke and dont chatter. Chattering is another sign of nervousness and a waste of time. When replying to a question, be concise. By all means, blow your own horn, but dont overdo it. An interviewer can spot a phony a mile away.

Dont bash precious employers or co-workers. Even if you didnt like them, you should have something positive to say about your previous employment. Stating that you learned from them is to your advantage.

Dont swear. Swearing is absolutely unacceptable. It will kill any change you might have had.

Dont ask about salary, the company benefits or how much vacation time you will get. Wait for the interviewer to touch on those details.

Show an enthusiasm and eagerness for the job. An I-can-take-it-or-leave-it attitude will not score you any points.