It is very easy to write a cover letter for a position. The pattern for all the cover letters is the same. You would need to highlight your skills and relevant education and how can you contribute to the organization you want to join. Also emphasize on why are you choosing that particular company for the job. You will be able to find all sorts of samples of cover letters at the link below:
jobs.jobbankusa.com
jobs.jobbankusa.com
