In the first instance, recruitment agencies will spend time reviewing the pool of candidates on their database. Therefore, be proactive in registering your CV with companies who are recruitment specialists for your field. If this doesn't yield results for you, follow up job ads in newpapers and on the Internet.
Here are the steps in the recruitment process:
Selection based on CV and covering letter of those who match the specific criteria (as detailed in the job description)
Selection by interview
Selection by test and panel interview
Following up references