Full name and address details.
Date
Dear (Mr/Mrs/Ms Surname)
(optional heading, bold or underlined - in this example you would normally refer to a job title, and include with the word 'opportunities' or 'openings', for example: 'commercial management opportunities')
I am interested in any openings in the above area and enclose my CV. You will see that I have skills and capabilities that enable me to make a significant contribution to an organization such as your own, notably (state two or three attributes briefly).
I look forward to hearing from you.
Yours sincerely
(Sign)
(And below print your name - not hand-written)