Do take copies of your letter and CV with you.

Do re-read the job ad before you go.

Do find out as much as you can about the company before you go.

Do try on what you're going to wear before you go.

Do be polite to the receptionist - if you're not, it'll get back.

Do think about taking a typed list of YOUR questions.

Don't try to change the time of your interview at the last minute.

Don't be late.

Don't wear something you've never worn before - make sure you're comfortable in it.

Don't get angry with the interviewer if you think they're pushing you - they might be seeing how you respond to pressure.

Don't interrogate the interviewer.