Always be polite, say please and thank you
Be punctual
Introduce yourself, firm handshake and eye contact
Present yourself well; clean and tidy ie, polish your shoes, tie hair up
Dress appropriately, no short skirts, low cleveage or offensive writing on clothing
Turn your phone off
Be prepared with questions, do your homework and research the company, question prep
Check your online self - facebook, twitter, etc
Take a look at this clothing youtube clip. Very interesting.
Click on the title